BMR Calculator

Estimate your basal metabolic rate — the calories your body burns at complete rest.

kg
cm
years
Basal metabolic rate (kcal/day)
1,649
  1. Basal metabolic rate (kcal/day)1,649
Inputs used
  • SexMale
  • Weight70 kg
  • Height175 cm
  • Age30 years

About this calculator

Basal metabolic rate is the energy your body uses just to stay alive — breathing, circulation, cell repair — measured over a day at complete rest. This calculator uses the Mifflin-St Jeor equation, the formula most dietetic associations recommend: 10 × weight (kg) + 6.25 × height (cm) − 5 × age, plus 5 for men or minus 161 for women.

BMR is not the number of calories to eat: everyday movement and exercise add on top. Multiply BMR by an activity factor (see the daily calorie needs calculator) to estimate total daily energy expenditure.

Like all formulas, it is an estimate for a typical adult body composition. Very muscular or very lean people burn more than the equation predicts; ask a professional before basing medical decisions on it.

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Results are informational only — not financial, medical or legal advice.