BMR Calculator (Basal Metabolic Rate)
Your Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions like breathing, circulation, and cell production while completely at rest. Use this calculator to estimate your BMR using the widely-accepted Mifflin-St Jeor equation.
The Mifflin-St Jeor equation, published in 1990, is considered the most accurate BMR formula for most people. For men, the formula is: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) + 5. For women: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) – 161. Your BMR represents the minimum calories your body needs; your actual daily calorie needs depend on your activity level (see the TDEE calculator).