Basal Metabolic Rate Calculator

Estimate your basal metabolic rate (BMR) and daily calorie needs based on body measurements, age, sex, and activity level.

Used in the Mifflin-St Jeor BMR formula.
Age slightly changes the estimate.
Use your current body weight.
Used with weight and age to estimate BMR.
Used to estimate total daily energy needs.
Adjusts the final calorie suggestion.
How we calculate

We use the Mifflin-St Jeor equation to estimate BMR, then multiply by your chosen activity factor to estimate total daily energy expenditure (TDEE). The goal setting adjusts that estimate up or down.