BMR Calculator
Calculate your Basal Metabolic Rate — calories burned at rest.
Your BMR
1709kcal/dayCalories burned at complete rest, before any activity is added.
Related Guide
BMR Calculator: Understanding Your Basal Metabolic Rate
About This Tool
Free BMR calculator online — calculate your Basal Metabolic Rate, the number of calories your body burns at complete rest just to maintain vital functions like breathing, circulation, and cell production. No sign-up, no upload, entirely browser-based. This tool uses the Mifflin-St Jeor equation based on your age, sex, height, and weight. BMR is the foundation for calculating TDEE (total daily calories including activity) and is used by nutritionists, trainers, and anyone building a calorie plan to understand their baseline energy requirement before adding activity on top.
How to Use
- 1
Enter your stats
Input your age, sex, height, and weight (metric or imperial).
- 2
Calculate
Your BMR appears instantly — the calories burned per day at complete rest.
- 3
Add activity for TDEE
Multiply by an activity factor (or use the TDEE calculator directly) to estimate your total daily calorie burn.