BMR Calculator
Calculate your Basal Metabolic Rate - calories your body burns at rest
Mifflin-St Jeor
1,737
cal/day
Harris-Benedict
1,804
cal/day
Daily Calories by Activity Level (TDEE)
Frequently Asked Questions
What is BMR?▼
Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions at complete rest - breathing, circulation, cell production, and temperature regulation.
What is the difference between BMR and TDEE?▼
BMR is calories burned at rest. TDEE (Total Daily Energy Expenditure) includes BMR plus calories burned through activity and exercise. TDEE = BMR x Activity Factor.
Which formula is more accurate?▼
The Mifflin-St Jeor equation (1990) is considered more accurate for most people than the older Harris-Benedict equation (1919). Both are shown for comparison.
How to Use BMR Calculator
- 1Open the BMR Calculator tool above - it loads instantly in your browser.
- 2Enter your data or upload your file. Everything is processed locally on your device - nothing is uploaded to any server.
- 3Get your results instantly. Copy, download, or share - completely free with no signup required.
BMR Calculatoris part of BriskTool's collection of free online tools. All tools run entirely in your browser for maximum privacy and speed.