401K Calculator
Project a defined-contribution retirement account using contributions, match and return assumptions.
Region sensitive | Static formula
Open calculatorDiscovery
Browse CalcMentor calculators by title, category, data type and regional sensitivity.
Project a defined-contribution retirement account using contributions, match and return assumptions.
Region sensitive | Static formula
Open calculatorCalculate the absolute difference between two numbers.
Global | Static_formula
Open calculatorCalculate ad roas from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate age in years, months and days plus next birthday details.
Global | Static_formula
Open calculatorEstimate first-month interest and principal split for an amortized loan.
Region sensitive | Static formula
Open calculatorEstimate future value of regular annuity payments.
Region sensitive | Static formula
Open calculatorEstimate monthly payout from a starting annuity balance.
Region sensitive | Static formula
Open calculatorCalculate BMI and distance below a selected BMI threshold.
Region sensitive | Static formula
Open calculatorEstimate api and token cost from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | External data user entered mode
Open calculatorEstimate appliance energy cost from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate APR from principal, total finance charges and term.
Region sensitive | Static formula
Open calculatorEstimate body-fat percentage with circumference-style inputs.
Region sensitive | Static formula
Open calculatorCalculate arr from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate arrival hour from start hour and duration hours.
Global | Static formula
Open calculatorCalculate aspect ratio from width and height.
Global | Static formula
Open calculatorEstimate a vehicle lease payment from depreciation, money factor and fees.
Region sensitive | Static formula
Open calculatorEstimate a fixed-rate vehicle loan payment from price, down payment, rate and term.
Region sensitive | Static formula
Open calculatorCalculate average from sum and count.
Global | Static formula
Open calculatorCalculate compound annual growth rate from start and end value.
Region sensitive | Static formula
Open calculatorCalculate average speed from distance and time.
Global | Static_formula
Open calculatorEstimate blood alcohol concentration with a Widmark-style formula.
Region sensitive | Static formula
Open calculatorCalculate baker's percentage from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate transfer time from file size and bandwidth.
Global | Static formula
Open calculatorEstimate barista fire from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEncode text to Base64 in the browser.
Global | Static formula
Open calculatorPerform basic arithmetic on two numbers.
Global | Static formula
Open calculatorEstimate powers for large-number planning.
Global | Static formula
Open calculatorConvert a decimal integer to binary.
Global | Static formula
Open calculatorCalculate bitrate from file size and duration.
Global | Static formula
Open calculatorEstimate body mass index with metric and imperial units, category interpretation and clear limitations.
Global | Static_formula
Open calculatorEstimate basal metabolic rate using Mifflin-St Jeor with sex coded as 1 male or 0 female.
Region sensitive | Static formula
Open calculatorCalculate board feet from thickness, width, length and quantity.
Global | Static_formula
Open calculatorEstimate boat loan monthly payment.
Region sensitive | Static formula
Open calculatorEstimate body fat percentage with a waist-to-height screening formula.
Region sensitive | Static formula
Open calculatorEstimate body surface area using the Mosteller formula.
Region sensitive | Static formula
Open calculatorClassify waist-to-height ratio as a simple body-shape indicator.
Region sensitive | Static formula
Open calculatorEstimate annual coupon income from face value and coupon rate.
Region sensitive | Static formula
Open calculatorEstimate band-cup difference from bust and underbust measurements.
Global | Static formula
Open calculatorEstimate break-even units from fixed cost, unit price and variable cost.
Global | Static_formula
Open calculatorCalculate break-even price from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate brick count from wall area and brick face area.
Global | Static formula
Open calculatorEstimate BTU per hour from watts.
Global | Static formula
Open calculatorCalculate monthly budget surplus or shortfall.
Region sensitive | Static formula
Open calculatorCalculate burn rate from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate business days between two dates by country, excluding weekends and Nager.Date public holidays with optional regional filtering.
Country specific | Live_api_dependent_data
Open calculatorEstimate fixed-rate business loan payment.
Global | Static formula
Open calculatorCalculate cake pan converter from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate daily calorie needs using researched BMR/TDEE methods and activity assumptions.
Region sensitive | Static_formula
Open calculatorEstimate calories burned from MET, body weight and duration.
Region sensitive | Static formula
Open calculatorEstimate mortgage payment with a user-entered amortization period.
Region sensitive | Static formula
Open calculatorCalculate cap rate from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate carbohydrate grams from calories and carbohydrate percentage.
Region sensitive | Static formula
Open calculatorCalculate carbon footprint from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorEstimate carpet area from room length and width plus waste percent.
Global | Static formula
Open calculatorCompare a cash-back offer with a lower interest financing offer.
Region sensitive | Static formula
Open calculatorCalculate cash-on-cash return from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate certificate-of-deposit maturity value with compound interest.
Region sensitive | Static formula
Open calculatorCalculate churn rate from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate circle area from radius.
Global | Static_formula
Open calculatorCalculate circle area and circumference from radius.
Global | Static formula
Open calculatorCalculate circumference from radius.
Global | Static_formula
Open calculatorEstimate cloud storage cost from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | External data user entered mode
Open calculatorEstimate coast fire from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate coffee ratio from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorProject future education cost from current annual cost and inflation assumption.
Region sensitive | Static formula
Open calculatorCalculate commission amount from sales and commission rate.
Global | Static_formula
Open calculatorCalculate common factor count for two integers.
Global | Static formula
Open calculatorProject future value from starting amount, contributions, rate, time and compounding frequency.
Global | Static_formula
Open calculatorEstimate conception day number from last menstrual period day and ovulation offset.
Region sensitive | Static formula
Open calculatorCalculate concrete volume from length, width and depth.
Global | Static formula
Open calculatorEstimate concrete volume from length, width and depth.
Global | Static_formula
Open calculatorCalculate cone volume from radius and height.
Global | Static_formula
Open calculatorCalculate a normal-approximation confidence interval.
Global | Static formula
Open calculatorCalculate contractor vs employee from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate contribution margin from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorConvert a value using a user-entered conversion factor.
Global | Static formula
Open calculatorCalculate conversion rate from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorScale cooking time by a percentage adjustment.
Global | Static formula
Open calculatorEstimate cost of living from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorCalculate cpc from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate cpm from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate credit card balance transfer from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate monthly interest on a credit card balance.
Region sensitive | Static formula
Open calculatorEstimate months to pay off a credit card balance with a fixed monthly payment.
Region sensitive | Static formula
Open calculatorCalculate crowdfunding goal from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate ctr from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate cube surface area from side length.
Global | Static_formula
Open calculatorCalculate cube volume from side length.
Global | Static_formula
Open calculatorConvert currencies with latest reference rates, historical-date rates, inverse rates, fee/spread estimates and manual fallback mode.
Global | Live_api_dependent
Open calculatorEstimate customer acquisition cost from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate customer lifetime value from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate closed cylinder surface area from radius and height.
Global | Static_formula
Open calculatorCalculate cylinder volume from radius and height.
Global | Static_formula
Open calculatorCalculate transfer rate from data size and time.
Global | Static formula
Open calculatorAdd or subtract dates and calculate differences in calendar days with clear date handling.
Global | Static_formula
Open calculatorCount days from weeks and extra days.
Global | Static formula
Open calculatorCalculate day-of-week index with Zeller-style numeric inputs.
Global | Static formula
Open calculatorConvert days to hours.
Global | Static formula
Open calculatorCalculate a due date after a number of business days while skipping weekends and Nager.Date public holidays.
Country specific | Live_api_dependent_data
Open calculatorCalculate debt avalanche vs snowball from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCompare current monthly debt payments with a consolidation loan payment.
Region sensitive | Static formula
Open calculatorEstimate payoff time for a debt with fixed monthly payments.
Region sensitive | Static formula
Open calculatorCalculate monthly debt-to-income ratio.
Region sensitive | Static formula
Open calculatorConvert a decimal to a percentage.
Global | Static_formula
Open calculatorEstimate deck cost from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate decking boards from deck width and board width.
Global | Static formula
Open calculatorCalculate density from mass and volume.
Global | Static_formula
Open calculatorCalculate straight-line depreciation per year.
Region sensitive | Static formula
Open calculatorEstimate dew point from temperature C and relative humidity.
Global | Static formula
Open calculatorRoll a selected number of dice with a selected number of sides.
Global | Static formula
Open calculatorCalculate sale price and savings from original price and discount percent.
Global | Static_formula
Open calculatorCalculate distance from speed and time.
Global | Static_formula
Open calculatorCalculate dividend reinvestment from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate dividend yield from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate dog chocolate toxicity from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorCalculate dog food from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate down payment amount and loan amount from home price and percentage.
Region sensitive | Static formula
Open calculatorEstimate download time from file size and connection speed.
Global | Static formula
Open calculatorEstimate drywall sheets from wall area and sheet area.
Global | Static formula
Open calculatorCalculate ecommerce profit from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate electrical power from voltage and current.
Global | Static_formula
Open calculatorCalculate electricity cost from power, time and price.
Global | Static formula
Open calculatorCalculate ellipse area from semi-major and semi-minor axes.
Global | Static_formula
Open calculatorCalculate emergency fund from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate engine displacement from bore, stroke and cylinder count.
Global | Static formula
Open calculatorEstimate horsepower from torque and RPM.
Global | Static formula
Open calculatorCalculate equivalent salary from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorEstimate estate tax from taxable estate and user-entered tax rate.
Region sensitive | Static formula
Open calculatorCalculate etf return from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | External data user entered mode
Open calculatorEstimate EV charging cost from battery energy and electricity price.
Global | Static formula
Open calculatorCalculate ev charging time from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate EV cost per 100 km or miles from consumption and electricity price.
Global | Static formula
Open calculatorEstimate capacity from area and area per person.
Global | Static formula
Open calculatorEstimate event cost per person from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate expense ratio cost from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate a base raised to an exponent.
Global | Static_formula
Open calculatorCount factors of a positive integer.
Global | Static formula
Open calculatorCalculate fat grams from calories and fat percentage.
Region sensitive | Static formula
Open calculatorEstimate fence cost from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate fence panels from perimeter and panel width.
Global | Static_formula
Open calculatorEstimate mortgage payment with user-entered mortgage insurance amount.
Region sensitive | Static formula
Open calculatorEstimate file size from bitrate and duration.
Global | Static formula
Open calculatorEstimate the score needed on a final exam to reach a target course grade.
Global | Static formula
Open calculatorCalculate future value from present value, rate and years.
Region sensitive | Static formula
Open calculatorEstimate fire number from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate flight emissions from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorEstimate flooring boxes from area, box coverage and waste percent.
Global | Static_formula
Open calculatorEstimate flooring cost from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate force from mass and acceleration.
Global | Static_formula
Open calculatorAdd two fractions and return a decimal result.
Global | Static formula
Open calculatorConvert a fraction to a percentage.
Global | Static_formula
Open calculatorCalculate freelance hourly rate from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate frequency from period.
Global | Static_formula
Open calculatorEstimate trip fuel cost from distance, efficiency and fuel price with metric/imperial support.
Region sensitive | Static_formula
Open calculatorConvert L/100km to approximate mpg using US gallons.
Global | Static formula
Open calculatorCalculate future value of a present amount.
Region sensitive | Static formula
Open calculatorCalculate fuel economy from distance and fuel used.
Global | Static formula
Open calculatorCalculate GDP using the expenditure approach.
Global | Static formula
Open calculatorEstimate kidney filtration using a simplified creatinine relationship.
Region sensitive | Static formula
Open calculatorEstimate a golf differential from score, course rating and slope rating.
Global | Static formula
Open calculatorCalculate GPA from grades and credits with grading-scale caveats.
Region sensitive | Static_formula
Open calculatorCalculate a test or assignment percentage from points earned and points possible.
Global | Static formula
Open calculatorCalculate quality points from grade points and credits.
Global | Static formula
Open calculatorEstimate gravel volume from length, width and depth.
Global | Static_formula
Open calculatorCalculate greatest common factor of two integers.
Global | Static formula
Open calculatorCalculate gross rent multiplier from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate remaining quantity after elapsed half-lives.
Global | Static formula
Open calculatorCalculate the weight range for a BMI range at a given height.
Region sensitive | Static formula
Open calculatorCalculate heat index from temperature F and relative humidity.
Global | Static formula
Open calculatorEstimate heat pump savings from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorConvert height from centimeters to feet and inches.
Region sensitive | Static formula
Open calculatorEstimate interest-only HELOC payment from balance and APR.
Region sensitive | Static formula
Open calculatorConvert a decimal integer to hexadecimal.
Global | Static formula
Open calculatorCompare public holidays between two countries in the same year, including country-only dates and same-date overlaps.
Country specific | Live_api_dependent_data
Open calculatorEstimate a fixed home equity loan payment.
Region sensitive | Static formula
Open calculatorEstimate home renovation budget from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate mechanical horsepower from watts.
Global | Static formula
Open calculatorCalculate total hotel cost from nightly rate, nights and rooms.
Global | Static formula
Open calculatorConvert days and hours into total hours.
Global | Static formula
Open calculatorConvert hours to minutes.
Global | Static formula
Open calculatorEstimate an affordable home price from monthly budget, down payment, rate and term.
Region sensitive | Static formula
Open calculatorCalculate household income percentile from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorEstimate ideal body weight using the Devine formula.
Region sensitive | Static formula
Open calculatorCalculate income percentile by age from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorCalculate income percentile from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorEstimate income tax from taxable income and a user-entered effective tax rate.
Region sensitive | Static formula
Open calculatorCompare purchasing power across years using documented CPI data sources and freshness labels.
Country specific | Periodically_updated_data
Open calculatorCalculate insulation from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate simple interest from principal, annual rate and time.
Region sensitive | Static formula
Open calculatorEstimate the annual rate needed to grow an amount to a target over time.
Region sensitive | Static formula
Open calculatorProject future investment value from starting amount, contributions, rate and time.
Region sensitive | Static formula
Open calculatorCalculate invoice late fee from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate address count from IPv4 CIDR prefix length.
Global | Static formula
Open calculatorProject an individual retirement account from balance, contribution and return assumptions.
Region sensitive | Static formula
Open calculatorApproximate annual return from initial investment, final value and annual cash flow.
Region sensitive | Static formula
Open calculatorCalculate kinetic energy from mass and velocity.
Global | Static_formula
Open calculatorCalculate laptop battery life from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate lean body mass from weight and body-fat percentage.
Region sensitive | Static formula
Open calculatorEstimate lease payment from cost, residual, money factor and term.
Region sensitive | Static formula
Open calculatorCalculate least common multiple of two integers.
Global | Static formula
Open calculatorCalculate lifestyle inflation from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate amortized loan payments, total interest and total cost with a payment schedule.
Region sensitive | Static_formula
Open calculatorCalculate loan-to-value from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate logarithm with a chosen base.
Global | Static_formula
Open calculatorCalculate quotient and remainder for integer division.
Global | Static formula
Open calculatorFind long weekends and bridge-day opportunities for a selected country and year using the Nager.Date LongWeekend endpoint.
Country specific | Live_api_dependent_data
Open calculatorGenerate a playful deterministic score from two name lengths.
Global | Static formula
Open calculatorCalculate ltv:cac ratio from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorSplit daily calories into carbohydrate, protein and fat grams.
Region sensitive | Static formula
Open calculatorCalculate gross margin percentage from revenue and cost.
Global | Static_formula
Open calculatorCalculate selling price from cost and markup percent.
Global | Static_formula
Open calculatorEstimate combined tax difference from two individual taxes and a joint tax estimate.
Region sensitive | Static formula
Open calculatorCalculate mass from density and volume.
Global | Static_formula
Open calculatorCalculate determinant of a 2 by 2 matrix.
Global | Static formula
Open calculatorCalculate arithmetic mean from a list of numbers.
Global | Static_formula
Open calculatorCalculate the median from a list of numbers.
Global | Static_formula
Open calculatorConvert image width and height in pixels to megapixels.
Global | Static formula
Open calculatorCalculate trip mileage cost from distance and cost per distance unit.
Global | Static formula
Open calculatorConvert minutes to seconds.
Global | Static formula
Open calculatorFind the most frequent value in a list.
Global | Static_formula
Open calculatorCalculate molarity from moles and liters.
Global | Static formula
Open calculatorCalculate molecular weight from mass and moles.
Global | Static formula
Open calculatorEstimate mortgage payment and first-month amortization split.
Region sensitive | Static formula
Open calculatorEstimate mortgage payments with optional taxes, insurance and clear country/region caveats.
Region sensitive | Static_formula
Open calculatorEstimate a UK-style mortgage payment using user-entered price, deposit, rate and term.
Region sensitive | Static formula
Open calculatorEstimate months needed to pay off a mortgage with extra monthly payments.
Region sensitive | Static formula
Open calculatorCalculate mortgage points from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate boxes from total volume and box volume.
Global | Static formula
Open calculatorEstimate moving cost from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorConvert US mpg to liters per 100 km.
Global | Static formula
Open calculatorCalculate mrr from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate mulch volume from area and depth.
Global | Static_formula
Open calculatorProject mutual fund value after expense ratio and assumed return.
Region sensitive | Static formula
Open calculatorCalculate net effective rent from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate net operating income from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate net worth by age from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate net worth from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate net worth percentile from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorFind the next public holiday for a selected country using Nager.Date, with days until, weekday and upcoming holidays.
Country specific | Live_api_dependent_data
Open calculatorFind the nth term of an arithmetic sequence.
Global | Static formula
Open calculatorCalculate occupancy rate from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate voltage from current and resistance.
Global | Static formula
Open calculatorCalculate current from voltage and resistance.
Global | Static_formula
Open calculatorCalculate voltage from current and resistance.
Global | Static_formula
Open calculatorEstimate one-repetition maximum with the Epley formula.
Region sensitive | Static formula
Open calculatorCalculate BMI and the amount above a selected BMI threshold.
Region sensitive | Static formula
Open calculatorEstimate ovulation day number from cycle length and luteal phase length.
Region sensitive | Static formula
Open calculatorApproximate two-tailed p-value from a z-score.
Global | Static formula
Open calculatorCalculate pace from time and distance.
Global | Static formula
Open calculatorEstimate paint needed from area, coverage and coats.
Global | Static_formula
Open calculatorEstimate paint cost from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate parallelogram area from base and height.
Global | Static_formula
Open calculatorCalculate parental leave pay from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorGenerate a random numeric password of a selected length.
Global | Static formula
Open calculatorCalculate paver from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate years needed to recover an investment from annual cash flow.
Global | Static formula
Open calculatorEstimate the periodic payment required to amortize a balance.
Region sensitive | Static formula
Open calculatorEstimate annual pension income from salary, service years and accrual rate.
Region sensitive | Static formula
Open calculatorCalculate percent error between measured and accepted values.
Global | Static formula
Open calculatorCalculate sale price and savings from a percent-off discount.
Global | Static formula
Open calculatorConvert a percentage to a decimal.
Global | Static_formula
Open calculatorCalculate percent of a number, part as percent of whole, percentage change, percentage-point difference, increase/decrease and whole-from-part.
Global | Static_formula
Open calculatorEstimate next period day number from last period and cycle length.
Region sensitive | Static formula
Open calculatorCalculate nPr and nCr for non-negative integers.
Global | Static formula
Open calculatorEstimate personal loan monthly payment.
Region sensitive | Static formula
Open calculatorCalculate pizza dough from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate pmi from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorCalculate portfolio rebalancing from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate gravitational potential energy.
Global | Static_formula
Open calculatorCalculate power from work and time.
Global | Static_formula
Open calculatorCalculate screen pixel density from resolution and diagonal size.
Global | Static formula
Open calculatorEstimate conception day offset from due date day number.
Region sensitive | Static formula
Open calculatorEstimate due date from last menstrual period or conception date with uncertainty clearly explained.
Global | Static_formula
Open calculatorCompare current gain with a user-entered recommended range.
Region sensitive | Static formula
Open calculatorDiscount a future value back to today.
Region sensitive | Static formula
Open calculatorCalculate pressure from force and area.
Global | Static_formula
Open calculatorCount prime factors of a positive integer.
Global | Static formula
Open calculatorCalculate simple probability from favorable and total outcomes.
Global | Static formula
Open calculatorCalculate profit and profit margin from revenue and cost.
Global | Static_formula
Open calculatorCalculate prorated rent from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate daily protein grams from body weight and grams per kilogram.
Region sensitive | Static formula
Open calculatorShow a public holiday calendar for a selected country and year using Nager.Date, with weekday, weekend and regional notes.
Country specific | Live_api_dependent_data
Open calculatorCalculate pyramid volume from base area and height.
Global | Static_formula
Open calculatorCalculate hypotenuse from two right-triangle legs.
Global | Static formula
Open calculatorCalculate the real roots of ax^2 + bx + c when they exist.
Global | Static formula
Open calculatorCalculate race predictor from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorGenerate a random number between a minimum and maximum.
Global | Static formula
Open calculatorCalculate statistical range from a list of numbers.
Global | Static_formula
Open calculatorConvert two numbers into a simplified ratio.
Global | Static formula
Open calculatorConvert part and whole values to a percentage.
Global | Static_formula
Open calculatorEstimate net proceeds from a property sale.
Region sensitive | Static formula
Open calculatorCalculate rebar from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorScale ingredient amount from original servings to target servings.
Global | Static formula
Open calculatorCalculate rectangle area from length and width.
Global | Static_formula
Open calculatorCalculate rectangle perimeter from length and width.
Global | Static_formula
Open calculatorCalculate box volume from length, width and height.
Global | Static_formula
Open calculatorEstimate monthly savings from refinancing a loan.
Region sensitive | Static formula
Open calculatorEstimate monthly rent as a share of monthly income.
Region sensitive | Static formula
Open calculatorCompare total rent cost with simplified owner cost over a period.
Region sensitive | Static formula
Open calculatorEstimate monthly rental cash flow.
Region sensitive | Static formula
Open calculatorCalculate reorder point from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate monthly repayment for a fixed balance and term.
Region sensitive | Static formula
Open calculatorCalculate resistance from voltage and current.
Global | Static formula
Open calculatorEstimate retirement savings trajectory with return, inflation and withdrawal assumptions clearly shown.
Region sensitive | Static_formula
Open calculatorEstimate retirement withdrawal longevity from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate revenue from unit price and quantity sold.
Global | Static_formula
Open calculatorCalculate rice to water ratio from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate hypotenuse and area of a right triangle.
Global | Static formula
Open calculatorEstimate a required minimum distribution using a user-entered distribution period.
Region sensitive | Static formula
Open calculatorCalculate return on investment percentage from return value and investment cost.
Global | Static_formula
Open calculatorConvert an integer from 1 to 3999 into a Roman numeral.
Global | Static formula
Open calculatorCalculate roof pitch per 12 units of run.
Global | Static_formula
Open calculatorEstimate roof surface area from footprint area and pitch factor.
Global | Static formula
Open calculatorCalculate nth root of a number.
Global | Static formula
Open calculatorProject an after-tax retirement account with annual contribution assumptions.
Region sensitive | Static formula
Open calculatorRound a number to a selected number of decimal places.
Global | Static formula
Open calculatorCalculate rsu from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorEstimate runway from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate s&p 500 return from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | External data user entered mode
Open calculatorCalculate saas pricing from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate safe withdrawal rate from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate safety stock from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorConvert gross pay between hourly, daily, weekly, biweekly, monthly and annual amounts with overtime and unpaid-time assumptions.
Region sensitive | Static_formula
Open calculatorAdd or remove a user-entered sales tax or VAT rate with quantity, discount, rounding and inclusive/exclusive breakdown.
Region sensitive | Static_formula
Open calculatorEstimate sample size for a proportion with confidence z and margin of error.
Global | Static formula
Open calculatorProject savings growth from a starting balance and monthly deposit.
Region sensitive | Static formula
Open calculatorEstimate savings rate from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate savings runway from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorPerform common scientific operations on a single value.
Global | Static formula
Open calculatorConvert a number to scientific-notation components.
Global | Static formula
Open calculatorConvert foot length in centimeters to an approximate EU shoe size.
Global | Static formula
Open calculatorCalculate simple interest from principal, annual rate and time.
Global | Static_formula
Open calculatorCalculate wake time after a number of sleep cycles.
Region sensitive | Static formula
Open calculatorCalculate slope from two points.
Global | Static formula
Open calculatorEstimate benefit income from a user-entered monthly benefit and claiming duration.
Region sensitive | Static formula
Open calculatorEstimate soil volume from area and depth.
Global | Static formula
Open calculatorEstimate solar panel savings from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorCalculate speed from distance and time.
Global | Static formula
Open calculatorCalculate sphere surface area from radius.
Global | Static_formula
Open calculatorCalculate sphere volume from radius.
Global | Static_formula
Open calculatorCalculate square area from side length.
Global | Static_formula
Open calculatorCalculate area in square feet from length and width in feet.
Global | Static formula
Open calculatorCalculate the square root of a non-negative number.
Global | Static_formula
Open calculatorCalculate step count from total rise and target riser height.
Global | Static formula
Open calculatorCalculate stair or ramp angle from rise and run.
Global | Static_formula
Open calculatorCalculate sample or population standard deviation with mean, variance, range, quartiles, median and IQR.
Global | Static_formula
Open calculatorCalculate mean and basic spread from count, sum and sum of squares.
Global | Static formula
Open calculatorCalculate stock option value from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | User entered data
Open calculatorCalculate stock total return from user-entered values with a visible formula, assumptions, limitations and source notes. Use dated source values for any market, distribution, regional or price-sensitive input.
Region sensitive | External data user entered mode
Open calculatorConvert gigabytes to megabytes and terabytes using decimal units.
Global | Static formula
Open calculatorEstimate a student loan payment from balance, rate and repayment term.
Region sensitive | Static formula
Open calculatorEstimate subscription cost from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate rectangular prism surface area.
Global | Static formula
Open calculatorEstimate take-home pay from gross pay and user-entered deduction rates.
Region sensitive | Static formula
Open calculatorEstimate target heart-rate zone from age and intensity range.
Region sensitive | Static formula
Open calculatorEstimate total daily energy expenditure from BMR and activity multiplier.
Region sensitive | Static formula
Open calculatorCalculate correct answers, missed answers and score percentage.
Global | Static formula
Open calculatorEstimate tile count from area, tile area and waste percent.
Global | Static_formula
Open calculatorCalculate time from distance and speed.
Global | Static_formula
Open calculatorCalculate weekly hours from regular daily hours and workdays.
Global | Static formula
Open calculatorCalculate differences between times and add or subtract hours, minutes and seconds.
Global | Static_formula
Open calculatorConvert an hour using UTC offsets.
Global | Static formula
Open calculatorCalculate time difference between two UTC offsets.
Global | Static formula
Open calculatorCalculate tip, total and split amounts with quick presets and simple rounding.
Region sensitive | Static_formula
Open calculatorEstimate tire diameter from width, aspect ratio and wheel diameter.
Global | Static formula
Open calculatorCalculate tire diameter from width, aspect ratio and wheel size.
Global | Static formula
Open calculatorCalculate total compensation from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorCalculate trapezoid area from two bases and height.
Global | Static_formula
Open calculatorSplit a travel cost between people.
Global | Static formula
Open calculatorCalculate triangle area from base and height.
Global | Static_formula
Open calculatorCalculate triangle area from base and height.
Global | Static formula
Open calculatorCalculate triangle perimeter from three side lengths.
Global | Static_formula
Open calculatorEstimate trip time from distance and average speed.
Global | Static formula
Open calculatorConvert common units across length, mass, temperature, volume, area, speed and more.
Global | Static_formula
Open calculatorPercent-encode text for use in URLs.
Global | Static formula
Open calculatorEstimate mortgage payment with a user-entered funding fee.
Region sensitive | Static formula
Open calculatorAdd or remove value-added tax using a user-entered VAT rate.
Region sensitive | Static formula
Open calculatorEstimate vo2 max estimate from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorEstimate voltage drop from current, resistance and one-way length.
Global | Static formula
Open calculatorCalculate rectangular prism volume.
Global | Static formula
Open calculatorEstimate wallpaper rolls from wall area and roll coverage.
Global | Static formula
Open calculatorCalculate wavelength from wave speed and frequency.
Global | Static_formula
Open calculatorEstimate wedding budget from user-entered values with a visible formula, assumptions, limitations and source notes.
Global | User entered data
Open calculatorConvert a day count into weeks.
Global | Static formula
Open calculatorCalculate weight force from mass and gravitational acceleration.
Global | Static formula
Open calculatorEstimate generic food points from calories, fat and fiber inputs.
Region sensitive | Static formula
Open calculatorCalculate a weighted course grade from two category scores and weights.
Global | Static formula
Open calculatorCalculate wind chill from temperature in F and wind speed in mph.
Global | Static formula
Open calculatorCalculate work from force and distance.
Global | Static_formula
Open calculatorCount working days from today or a selected start date to a target date, excluding weekends and Nager.Date public holidays.
Country specific | Live_api_dependent_data
Open calculatorCalculate z-score from value, mean and standard deviation.
Global | Static formula
Open calculator