← All Calculators

BMR Calculator — Free Online Calculator

Calculates basal metabolic rate and daily calorie needs.

What is it?

The BMR calculator estimates the number of calories your body burns at complete rest (Basal Metabolic Rate) using the Mifflin-St Jeor equation, then multiplies by an activity factor to get your Total Daily Energy Expenditure (TDEE).

Formula

BMR (men) = 10×weight(kg) + 6.25×height(cm) − 5×age + 5 BMR (women) = 10×weight(kg) + 6.25×height(cm) − 5×age − 161 TDEE = BMR × Activity factor (1.2 sedentary … 1.9 very active)

Example

Woman, 30 years, 65 kg, 168 cm. BMR = 10×65 + 6.25×168 − 5×30 − 161 = 650 + 1050 − 150 − 161 = 1,389 kcal. Lightly active (×1.375) → TDEE ≈ 1,910 kcal.

Loading calculator…