BMR Calculator
Estimate the calories your body burns at rest.
About the BMR Calculator
The BMR Calculator estimates your Basal Metabolic Rate — the energy your body uses at complete rest — using the widely accepted Mifflin-St Jeor equation. It is the starting figure for working out how many calories you need each day before activity is added on top.
Frequently asked questions
BMR is what your body burns at complete rest. TDEE is your total daily burn once activity, exercise and digestion are added on top — usually BMR multiplied by an activity factor. Use BMR here, then the Calorie (TDEE) calculator for the full daily figure.