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Health calculator

Protein Calculator

Estimate a daily protein range from body weight and a goal-based grams-per-kilogram target.

Protein needs vary with age, energy intake, illness, pregnancy, kidney disease and training. Use clinician guidance when medical conditions apply.

How the range is calculated

The calculator multiplies body weight in kilograms by a selected grams-per-kilogram range. The per-meal range divides daily protein by meal count.

Example

For a 75 kg person using a 1.2 to 1.6 g/kg active range, daily protein is 90 to 120 g. Across 3 meals, that is about 30 to 40 g per meal.

Common mistakes

Do not use protein targets without considering total calories, training goal, kidney disease, pregnancy or medical guidance.

How to use the result

Treat the range as a planning aid, not a prescription. This is nutrition context, not medical advice. People with kidney disease, eating disorders, pregnancy or complex medical conditions need professional guidance.

References

Last reviewed: 2026-05-17

Before relying on this result

Use this calculator together with the formula, assumptions, limitations and examples on the page. If the topic involves health, tax, lending, investment, legal, safety or current-rate decisions, treat the number as an estimate and check the relevant primary source or professional guidance.

Calculator metadata last reviewed: 2026-05-14.