BMR Calculator
Find your Basal Metabolic Rate and daily calorie needs.
Fill in your details to see your BMR
TDEE by Activity Level
| Activity | Mifflin TDEE | HB TDEE |
|---|---|---|
Sedentary Little or no exercise | — | — |
Lightly active Light exercise 1–3 days/week | — | — |
Moderately active Moderate exercise 3–5 days/week | — | — |
Very active Hard exercise 6–7 days/week | — | — |
Extra active Very hard exercise or physical job | — | — |
Note: BMR and TDEE estimates are based on statistical formulas and may not reflect individual metabolic variation. Use these as a baseline and adjust based on real-world results.
Discover your Basal Metabolic Rate (BMR) — the calories your body burns at complete rest — using both the Mifflin-St Jeor and Harris-Benedict formulas. Then see your Total Daily Energy Expenditure (TDEE) across all five activity levels.
Key Features
Two formula comparison
Results from the industry-standard Mifflin-St Jeor and the classic Harris-Benedict formula are shown side by side.
Five activity levels
Click any row in the TDEE table to see your estimated calorie needs from Sedentary to Extra Active.
Metric and imperial support
Enter measurements in kg/cm or lb/ft+in.
Sex-specific formulas
Mifflin-St Jeor and Harris-Benedict use different constants for males and females for accurate results.
How to Use
- 1Select your unit system, biological sex, and enter age, weight, and height.
- 2Your BMR from both formulas appears on the right.
- 3Scroll down to the TDEE table and click your activity level to see your daily calorie needs.