BMI + Metabolic Rate Calculator

Calculate body mass index and estimate basal metabolic rate from height, weight, age, and sex.

Enter height in centimeters.
Enter weight in kilograms.
Used for BMR estimate.
Used in a standard BMR formula.
Used for daily calorie estimate.
Choose what to emphasize first.
How we calculate

BMI = weight / height². BMR uses the Mifflin-St Jeor equation. Daily calories are estimated as BMR × activity factor.