Enter your details — your calorie needs update as you type.
About the TDEE Calculator
This free TDEE calculator estimates your Total Daily Energy Expenditure — the calories you burn in a day — along with your BMR (the calories your body uses at rest). Enter your age, sex, height, weight and activity level, and it shows your maintenance calories plus rough targets to lose or gain weight.
It uses the well-known Mifflin‑St Jeor formula, works in metric or imperial, and runs entirely in your browser; nothing is uploaded.
How it's calculated
Your BMR comes from the Mifflin‑St Jeor equation (using age, sex, height and weight). Multiplying BMR by an activity factor gives your TDEE — the calories to maintain your weight. To lose weight, eat below it; to gain, eat above it. These are estimates and a helpful starting point, not medical advice.
Features
- BMR and TDEE from your details
- Metric or imperial units
- Lose / gain calorie targets
- Updates as you type
- 100% in your browser — no sign-up, nothing uploaded
How to use it
- Choose units — metric or imperial
- Enter your sex, age, height, weight and activity level
- Read your numbers — BMR, maintenance calories, and lose/gain targets
