BMR Calculator

Estimate resting energy needs with the Mifflin–St Jeor equation. BMR is not the same as total daily calorie needs.

Health information notice: Results are estimates based on general formulas and may not reflect individual circumstances. This tool is not a diagnosis or substitute for personalized advice from a qualified healthcare professional.

How the bmr calculator works

BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age + 5 for males or −161 for females.

Formula and assumptions

BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age + 5 for males or −161 for females.

Example

Try the sample values, then change one input at a time to see how the result changes. Check that units match the labels.

Important limitations

BMR is an estimate, not a prescribed calorie target. Individual metabolism can differ; consult a qualified professional for personalized nutrition advice.

Frequently asked questions

What does this calculator do?

What does this calculator estimate? Estimate resting energy needs with the Mifflin–St Jeor equation. BMR is not the same as total daily calorie needs.

What should I know about the result?

BMR is an estimate, not a prescribed calorie target. Individual metabolism can differ; consult a qualified professional for personalized nutrition advice.

Results are estimates for general information only. They are not a substitute for professional advice where applicable. Found a mistake? Report an error.