⚡ BMR Calculator

Find how many calories your body uses at rest.

How it works

BMR is the energy your body uses at complete rest to keep systems going.
We use the Mifflin-St Jeor equation, widely used for adult estimates from weight, height, age and sex.
Your real daily need is usually higher - see TDEE once you account for activity.

Common questions

Should I eat only my BMR?

No. BMR alone is normally too low for an active day. Use TDEE or our calorie calculator for day-to-day targets.

Why does sex change the number?

Average body composition differs. Equations use sex as a simple adult estimate, not a medical assessment.