BMR is the calories your body burns at complete rest, commonly estimated with the Mifflin-St Jeor equation from your weight, height, age and sex. A free BMR calculator applies the equation in your browser and returns an estimated resting calorie figure. It is a screening estimate, not medical advice.
Free BMR calculator. Estimate your basal metabolic rate, the calories your body burns at complete rest, using the accurate Mifflin-St Jeor equation.
Open BMR Calculator → Free toolFree TDEE and calorie calculator. Estimate your daily calorie needs from BMR and activity level, plus targets for cutting, maintaining or bulking.
Open Calorie / TDEE Calculator →A widely used BMR estimate is the Mifflin-St Jeor equation: 10 x weight in kg, plus 6.25 x height in cm, minus 5 x age in years, then plus 5 for men or minus 161 for women. It gives the approximate calories your body uses at rest to keep basic functions running. A calculator handles the arithmetic and lets you switch between metric and imperial inputs.
BMR is the foundation for estimating total daily calorie needs: multiply it by an activity factor to get TDEE. On its own it tells you roughly how many calories you would burn lying still all day. Because the equation is a population average, individual metabolism varies, so treat the number as a baseline and verify against how your body actually responds, or with a professional for any health plan.
10 x weight in kg + 6.25 x height in cm - 5 x age + 5 for men, or - 161 for women. It estimates resting calorie burn.
BMR is calories burned at rest. TDEE multiplies BMR by an activity factor to include daily movement and exercise.
No. Height, age and sex all change it, and individual metabolism varies, so the equation is an estimate rather than an exact figure.