BMR calculator

Basal metabolic rate (BMR) calculator

Basal metabolic rate (BMR) 1,718 kcal/day at rest

BMR is the energy your body burns at rest (Mifflin-St Jeor formula). For your maintenance calories, multiply it by your activity level with the daily calories calculator. For guidance only, not medical advice.

This BMR calculator works out your basal metabolic rate with the Mifflin-St Jeor formula, from your sex, weight, height and age.

Your energy expenditure at rest

Your basal metabolic rate is the starting point for planning your diet: the calories you burn without moving at all. Multiply it by your activity level to get your total daily energy expenditure (TDEE).

For guidance only — this does not replace advice from a healthcare professional.

FAQ

What is the basal metabolic rate?

It's the energy (calories) your body uses at complete rest to keep vital functions going, like breathing or pumping blood. It's the baseline used to calculate your total daily energy expenditure.

Which formula does it use?

The Mifflin-St Jeor formula, one of the most reliable and widely used, based on sex, weight, height and age.

Is this the same as my total daily calories?

No. Your BMR only covers energy at rest. Multiply it by your activity level to get your maintenance calories (TDEE).