BMR Calculator

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Estimate your Basal Metabolic Rate — the calories your body burns at rest — using the accurate Mifflin-St Jeor equation. Metric or imperial, free and instant.

years
kg
cm
ft
in
Your BMR – kcal / day
Per hour –
Your Basal Metabolic Rate is the energy your body uses at complete rest to keep vital functions running. It is calculated with the Mifflin-St Jeor equation: 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5 for men or − 161 for women. Multiply your BMR by an activity factor to estimate your total daily calorie needs.
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