BMR and Calorie Calculator
Basal metabolic rate and daily calorie needs.
Input
This tool runs entirely in your browser. The data you paste or load is never uploaded.
Result
Enter your input, then run the tool.
About this tool
Estimates basal metabolic rate with the Mifflin–St Jeor equation and total daily energy expenditure for your activity level, with indicative targets for maintaining, losing or gaining weight gradually.
How to use it
- Choose the sex used by the formula and enter age, height and weight.
- Pick your usual activity level.
- Read your BMR and estimated daily calories.
Frequently asked questions
How accurate is it?
Mifflin–St Jeor is within about 10% for most adults. Individual metabolism varies, so adjust after a few weeks of real data.
Is it suitable for everyone?
No. It is not meant for children, pregnancy or medical conditions. Ask a doctor or dietitian before changing your diet significantly.
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