BMR Calculator
Estimate your basal metabolic rate (BMR) and total daily energy expenditure (TDEE) with the Mifflin-St Jeor equation, plus calorie targets for weight loss.
This tool runs entirely in your browser.
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How to use the BMR Calculator
- 1Enter sex, age, weight and height.
- 2Choose your activity level.
- 3Read your BMR and daily calorie estimates.
What is the BMR Calculator?
Mifflin-St Jeor: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age + 5 (men) or − 161 (women). TDEE multiplies BMR by an activity factor from 1.2 to 1.9.
Frequently asked questions
What is the difference between BMR and TDEE?
BMR is what you burn at complete rest; TDEE adds daily activity and exercise.
Is the BMR Calculator free and private?
Yes. The BMR Calculator is free, needs no account, and runs entirely in your browser. What you type is never sent to a server or stored.
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