BMR Calculator
Calculate your Basal Metabolic Rate (BMR) and daily calorie needs (TDEE) by activity level from gender, age, height, and weight, using the Mifflin-St Jeor equation. Everything runs in your browser.
Enter age, height, and weight
FAQ
What is BMR?
It is the minimum calories your body burns per day at rest to sustain vital functions like breathing and temperature regulation.
How do I use TDEE?
Eating below your TDEE leads to weight loss and above it to weight gain. A common target for weight loss is TDEE minus 300–500 kcal.
Which formula is used?
The Mifflin-St Jeor equation (1990), widely regarded as the most accurate. Actual metabolism varies with factors like muscle mass, so treat results as estimates.
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