Wondering how many calories your body burns at rest?
Basal Metabolic Rate (BMR) Calculator
Use this BMR calculator to estimate how much energy your body needs each day to maintain essential functions — like breathing, circulation, and digestion.
BMR Calculator
What is BMR?
BMR, or Basal Metabolic Rate, is the number of calories your body burns at rest to maintain vital functions like breathing, circulation and maintaining body temperature.
Why is BMR important?
Knowing your BMR helps you understand your basic calorie needs and is the first step to calculating your total daily energy expenditure (TDEE).
How is BMR calculated?
BMR is calculated using formulas like the Mifflin-St Jeor equation, which factors in your age, gender, height, and weight. This BMR calculator does this instantly.
Does BMR change over time?
Yes. BMR can change based on age, weight, muscle mass, and overall health. It tends to decrease with age or inactivity.