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BMR Calculator
Calculate your Basal Metabolic Rate using the accurate Mifflin-St Jeor equation from your sex, age, height and weight. BMR is the foundation for working out your daily calorie needs.
Basal Metabolic Rate
1,649
calories/day at complete rest
Calculated with the Mifflin-St Jeor equation. Use the Calorie (TDEE) calculator to factor in activity.
🔒 This tool runs entirely in your browser. Your data is never uploaded.
Frequently asked questions
What is BMR?＋
Your Basal Metabolic Rate — the calories your body burns at complete rest to keep basic functions running.
How is it calculated?＋
From your age, sex, height and weight using a standard equation such as Mifflin-St Jeor.
Is this medical advice?＋
No — it's an estimate for general fitness planning, not a substitute for professional guidance.