BMR Calculator

Calculate your Basal Metabolic Rate (BMR) using your age, gender, height, and weight. Our free BMR Calculator gives you a quick estimate of the calories your body needs at rest.

On this page:

BMR Calculator

Basal Metabolic Rate (BMR) estimates the number of calories your body needs at complete rest to maintain basic life functions.

Mifflin-St Jeor Formula

Men: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age(years) + 5
Women: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age(years) − 161

Example

Man, 28 years, 80 kg, 180 cm:
BMR = 10×80 + 6.25×180 − 5×28 + 5 = 800 + 1125 − 140 + 5 = 1790 calories

BMR is only the resting requirement. Actual daily needs are higher once activity is included.

Frequently Asked Questions FAQ

What is BMR?
BMR is the estimated number of calories your body burns at complete rest.
Which formula is used?
This calculator uses the Mifflin-St Jeor equation, one of the most accurate common formulas.
Is BMR the same as daily calorie needs?
No. BMR is only the resting portion. Total daily needs also include activity.
Why do men and women have different formulas?
The formulas account for average differences in body composition between sexes.
Can BMR change over time?
Yes. Weight, age, and muscle mass changes all affect BMR.

Have Feedback or a Suggestion?

Kindy let us know your reveiws about this page

Related Calculators
Categories
;