BMR & Calorie Calculator
Basal metabolic rate and daily calories by activity level.
How to use the BMR & Calorie tool
- Enter your bmr in the fields above.
- Adjust any slider or type an exact number — the answer updates as you go.
- Copy the result and close the tab. Nothing you entered was sent anywhere.
About the BMR & Calorie tool
Using the Mifflin-St Jeor equation, the calculator estimates calories burned at rest, then multiplies by your activity level for a daily maintenance estimate.
Treat the outputs as a starting point: individual metabolism varies, and gradually adjusting against real weight change beats any formula.
Everything runs locally in your browser: no data is uploaded, no account is needed, and it works offline once the page has loaded.
Embed this tool
Customize and copy an iframe. Linking back helps both sites.