Health & Fitness
BMR Calculator
Basal metabolic rate — the calories your body burns at rest.
How this bmr calculator works
The bmr calculator takes the numbers you enter and applies a standard formula for this kind of calculation, showing the result instantly with no page reload. Basal metabolic rate — the calories your body burns at rest.
Everything runs client-side in JavaScript, so your inputs never leave your device — there's no server, no account and no tracking involved in getting your answer.
Frequently asked questions
It uses the Mifflin-St Jeor equation, widely regarded as one of the more accurate formulas for estimating resting energy expenditure from weight, height, age and sex.