BMR Calculator
Calculate your Basal Metabolic Rate — the calories your body burns at rest.
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⚡ Instant Results
What is a BMR Calculator?
Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions at rest.
How to Use This BMR Calculator
- Enter your age, sex, height and weight.
- Click Calculate BMR.
- See your BMR in kcal/day.
How It Works
Mifflin–St Jeor: Men = 10w + 6.25h − 5a + 5; Women = 10w + 6.25h − 5a − 161.
Example Calculation
A 35-year-old man, 180 cm, 80 kg: BMR ≈ 1,780 kcal/day.
Frequently Asked Questions
What is the difference between BMR and TDEE?
BMR is calories burned at complete rest; TDEE includes activity.
Privacy & Data Processing
All calculations run in your browser.
Last updated: 2026-10-01