BMR Calculator
Calculate your basal metabolic rate (BMR) with the Mifflin-St Jeor equation from weight, height, and age.
- BMR (women)
- 1452 kcal/day
Formula: BMR = 10×weight + 6.25×height − 5×age + 5 (men) or − 161 (women)
About BMR Calculator
BMR Calculator is a free online calculator that gives you an instant, accurate result as you type. Calculate your basal metabolic rate (BMR) with the Mifflin-St Jeor equation from weight, height, and age.
The calculation uses the standard formula BMR = 10×weight + 6.25×height − 5×age + 5 (men) or − 161 (women) and updates live with every change to the inputs. Everything runs client-side in your browser — fast, private, and free to use as often as you like.
The Mifflin-St Jeor equation, published in 1990, is considered the most accurate BMR formula for the general population by the Academy of Nutrition and Dietetics.
Results are estimates for educational purposes and not medical advice.
Frequently Asked Questions
Is BMR Calculator free to use?
Yes. BMR Calculator is completely free, with no sign-up, no downloads, and no usage limits. You can use it as many times as you like on any device with a web browser.
How accurate is this calculator?
The calculator applies the standard formula (BMR = 10×weight + 6.25×height − 5×age + 5 (men) or − 161 (women)) with full floating-point precision and rounds only the displayed result. For most practical purposes the results are exact.
What is the difference between BMR and TDEE?
BMR is the energy your body burns at complete rest, while TDEE multiplies BMR by an activity factor to estimate your total daily calorie burn including movement and exercise.
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