BMR Calculator, Basal Metabolic Rate Calculator

BMR Calculator

Calculate your BMR

To determine your current BMR, please provide the following information:

Unit

Gender

Weight

Height

Age

BMR formula

The Katch-McArdle formula is generally the most accurate if you know your body fat percentage and are less than 20% body fat. If you don’t know your body fat, use the Mifflin-St Jeor formula.

Body Fat %

Not sure what your body fat percentage is? Use the Legion Body Fat Percentage Calculator to find out!

Your basal metabolic rate (BMR) is 370 calories

Calories based on activity level

No activity (sedentary) 425

A little activity(1 to 3 hours of exercise or sports per week) 481

Some activity(4 to 6 hours of exercise or sports per week) 555

A lot of activity(7 to 9 hours of exercise or sports per week) 629

A TON of activity(10+ hours of exercise or sports per week) 703

What is your BMR?

Your BMR (Basal Metabolic Rate) is an estimate of how many calories youd burn if you were to do nothing but rest for 24 hours. It represents the minimum amount of energy needed to keep your body functioning, including breathing and keeping your heart beating. Your BMR does not include the calories you burn from normal daily activities or exercise. Our calculator uses the Mifflin-St. Jeor equations to estimate your BMR which is believed to be more accurate than the more commonly used Harris-Benedict equation.