Category hub

Financial calculators

Loan, mortgage, interest, inflation, salary and retirement calculators with clear assumptions and source-backed methodology.

What this category helps with

Financial calculators help with questions where a number is useful but the assumptions matter. Start with the calculator closest to your question, then use the linked guide or formula page when units, rates, dates, local rules or source data could change the answer.

Best starting points

Loan Calculator

Estimate amortized loan payments, total interest and total cost with a payment schedule.

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Mortgage Calculator

Estimate mortgage payments with optional taxes, insurance and clear country/region caveats.

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Compound Interest Calculator

Project future value from starting amount, contributions, rate, time and compounding frequency.

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Inflation Calculator

Compare purchasing power across years using documented CPI data sources and freshness labels.

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Retirement Calculator

Estimate retirement savings trajectory with return, inflation and withdrawal assumptions clearly shown.

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Auto Loan Calculator

Estimate a fixed-rate vehicle loan payment from price, down payment, rate and term.

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How to choose the right calculator

  • Use a broad calculator first when you need a quick estimate.
  • Use a more specific calculator when rates, units, dates, eligibility or fees change the answer.
  • Read assumptions before comparing results across calculators or external sources.
  • For current-data topics, confirm the data source and date before relying on the result.

Calculators

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Loan Calculator

Estimate amortized loan payments, total interest and total cost with a payment schedule.

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Mortgage Calculator

Estimate mortgage payments with optional taxes, insurance and clear country/region caveats.

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Recommended

Compound Interest Calculator

Project future value from starting amount, contributions, rate, time and compounding frequency.

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Inflation Calculator

Compare purchasing power across years using documented CPI data sources and freshness labels.

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Retirement Calculator

Estimate retirement savings trajectory with return, inflation and withdrawal assumptions clearly shown.

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Auto Loan Calculator

Estimate a fixed-rate vehicle loan payment from price, down payment, rate and term.

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Interest Calculator

Calculate simple interest from principal, annual rate and time.

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Payment Calculator

Estimate the periodic payment required to amortize a balance.

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Amortization Calculator

Estimate first-month interest and principal split for an amortized loan.

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Investment Calculator

Project future investment value from starting amount, contributions, rate and time.

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Finance Calculator

Calculate future value from present value, rate and years.

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Mortgage Payoff Calculator

Estimate months needed to pay off a mortgage with extra monthly payments.

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Income Tax Calculator

Estimate income tax from taxable income and a user-entered effective tax rate.

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401K Calculator

Project a defined-contribution retirement account using contributions, match and return assumptions.

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Interest Rate Calculator

Estimate the annual rate needed to grow an amount to a target over time.

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House Affordability Calculator

Estimate an affordable home price from monthly budget, down payment, rate and term.

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Savings Calculator

Project savings growth from a starting balance and monthly deposit.

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Rent Calculator

Estimate monthly rent as a share of monthly income.

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Marriage Tax Calculator

Estimate combined tax difference from two individual taxes and a joint tax estimate.

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Estate Tax Calculator

Estimate estate tax from taxable estate and user-entered tax rate.

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Pension Calculator

Estimate annual pension income from salary, service years and accrual rate.

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Social Security Calculator

Estimate benefit income from a user-entered monthly benefit and claiming duration.

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Annuity Calculator

Estimate future value of regular annuity payments.

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Annuity Payout Calculator

Estimate monthly payout from a starting annuity balance.

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Credit Card Calculator

Estimate monthly interest on a credit card balance.

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Credit Card Payoff Calculator

Estimate months to pay off a credit card balance with a fixed monthly payment.

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Debt Payoff Calculator

Estimate payoff time for a debt with fixed monthly payments.

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Debt Consolidation Calculator

Compare current monthly debt payments with a consolidation loan payment.

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Repayment Calculator

Estimate monthly repayment for a fixed balance and term.

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Student Loan Calculator

Estimate a student loan payment from balance, rate and repayment term.

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College Cost Calculator

Project future education cost from current annual cost and inflation assumption.

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CD Calculator

Estimate certificate-of-deposit maturity value with compound interest.

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Bond Calculator

Estimate annual coupon income from face value and coupon rate.

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Mutual Fund Calculator

Project mutual fund value after expense ratio and assumed return.

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Roth IRA Calculator

Project an after-tax retirement account with annual contribution assumptions.

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IRA Calculator

Project an individual retirement account from balance, contribution and return assumptions.

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RMD Calculator

Estimate a required minimum distribution using a user-entered distribution period.

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VAT Calculator

Add or remove value-added tax using a user-entered VAT rate.

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Cash Back or Low Interest Calculator

Compare a cash-back offer with a lower interest financing offer.

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Auto Lease Calculator

Estimate a vehicle lease payment from depreciation, money factor and fees.

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Depreciation Calculator

Calculate straight-line depreciation per year.

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Average Return Calculator

Calculate compound annual growth rate from start and end value.

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Debt-to-Income Ratio Calculator

Calculate monthly debt-to-income ratio.

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Real Estate Calculator

Estimate net proceeds from a property sale.

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Take-Home Paycheck Calculator

Estimate take-home pay from gross pay and user-entered deduction rates.

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Personal Loan Calculator

Estimate personal loan monthly payment.

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Boat Loan Calculator

Estimate boat loan monthly payment.

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Lease Calculator

Estimate lease payment from cost, residual, money factor and term.

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Refinance Calculator

Estimate monthly savings from refinancing a loan.

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Budget Calculator

Calculate monthly budget surplus or shortfall.

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Rental Property Calculator

Estimate monthly rental cash flow.

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IRR Calculator

Approximate annual return from initial investment, final value and annual cash flow.

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APR Calculator

Estimate APR from principal, total finance charges and term.

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FHA Loan Calculator

Estimate mortgage payment with user-entered mortgage insurance amount.

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VA Mortgage Calculator

Estimate mortgage payment with a user-entered funding fee.

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Home Equity Loan Calculator

Estimate a fixed home equity loan payment.

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HELOC Calculator

Estimate interest-only HELOC payment from balance and APR.

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Down Payment Calculator

Calculate down payment amount and loan amount from home price and percentage.

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Rent vs. Buy Calculator

Compare total rent cost with simplified owner cost over a period.

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Present Value Calculator

Discount a future value back to today.

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Future Value Calculator

Calculate future value of a present amount.

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Mortgage Calculator UK

Estimate a UK-style mortgage payment using user-entered price, deposit, rate and term.

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Canadian Mortgage Calculator

Estimate mortgage payment with a user-entered amortization period.

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Mortgage Amortization Calculator

Estimate mortgage payment and first-month amortization split.

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Savings Rate Calculator

Estimate savings rate from user-entered values with a visible formula, assumptions, limitations and source notes.

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FIRE Number Calculator

Estimate fire number from user-entered values with a visible formula, assumptions, limitations and source notes.

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Coast FIRE Calculator

Estimate coast fire from user-entered values with a visible formula, assumptions, limitations and source notes.

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Barista FIRE Calculator

Estimate barista fire from user-entered values with a visible formula, assumptions, limitations and source notes.

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Emergency Fund Calculator

Calculate emergency fund from user-entered values with a visible formula, assumptions, limitations and source notes.

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Savings Runway Calculator

Estimate savings runway from user-entered values with a visible formula, assumptions, limitations and source notes.

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Net Worth Calculator

Calculate net worth from user-entered values with a visible formula, assumptions, limitations and source notes.

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Net Worth Percentile Calculator

Calculate 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.

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Net Worth by Age Calculator

Calculate net worth by age from user-entered values with a visible formula, assumptions, limitations and source notes.

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Income Percentile Calculator

Calculate 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.

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Income Percentile by Age Calculator

Calculate 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.

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Household Income Percentile Calculator

Calculate 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.

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Safe Withdrawal Rate Calculator

Calculate safe withdrawal rate from user-entered values with a visible formula, assumptions, limitations and source notes.

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Retirement Withdrawal Longevity Calculator

Estimate retirement withdrawal longevity from user-entered values with a visible formula, assumptions, limitations and source notes.

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Cost of Living Calculator

Estimate 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.

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Equivalent Salary Calculator

Calculate 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.

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Total Compensation Calculator

Calculate total compensation from user-entered values with a visible formula, assumptions, limitations and source notes.

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Parental Leave Pay Calculator

Calculate 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.

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Stock Total Return Calculator

Calculate 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.

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ETF Return Calculator

Calculate 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.

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S&P 500 Return Calculator

Calculate 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.

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Dividend Reinvestment Calculator

Calculate dividend reinvestment from user-entered values with a visible formula, assumptions, limitations and source notes.

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Dividend Yield Calculator

Calculate dividend yield from user-entered values with a visible formula, assumptions, limitations and source notes.

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Expense Ratio Cost Calculator

Estimate expense ratio cost from user-entered values with a visible formula, assumptions, limitations and source notes.

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Portfolio Rebalancing Calculator

Calculate portfolio rebalancing from user-entered values with a visible formula, assumptions, limitations and source notes.

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RSU Calculator

Calculate 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.

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Stock Option Value Calculator

Calculate 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.

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Debt Avalanche vs Snowball Calculator

Calculate debt avalanche vs snowball from user-entered values with a visible formula, assumptions, limitations and source notes.

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Credit Card Balance Transfer Calculator

Calculate credit card balance transfer from user-entered values with a visible formula, assumptions, limitations and source notes.

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PMI Calculator

Calculate 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.

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Loan-to-Value Calculator

Calculate loan-to-value from user-entered values with a visible formula, assumptions, limitations and source notes.

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Mortgage Points Calculator

Calculate mortgage points from user-entered values with a visible formula, assumptions, limitations and source notes.

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Prorated Rent Calculator

Calculate prorated rent from user-entered values with a visible formula, assumptions, limitations and source notes.

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Net Effective Rent Calculator

Calculate net effective rent from user-entered values with a visible formula, assumptions, limitations and source notes.

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Cap Rate Calculator

Calculate cap rate from user-entered values with a visible formula, assumptions, limitations and source notes.

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Cash-on-Cash Return Calculator

Calculate cash-on-cash return from user-entered values with a visible formula, assumptions, limitations and source notes.

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Gross Rent Multiplier Calculator

Calculate gross rent multiplier from user-entered values with a visible formula, assumptions, limitations and source notes.

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Net Operating Income Calculator

Calculate net operating income from user-entered values with a visible formula, assumptions, limitations and source notes.

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Occupancy Rate Calculator

Calculate occupancy rate from user-entered values with a visible formula, assumptions, limitations and source notes.

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