BMR Calculator
Calculate how many calories your body burns at rest
Your Basal Metabolic Rate
This is the number of calories your body needs at rest.
What is BMR?
Basal Metabolic Rate (BMR) is the number of calories your body needs to accomplish its most basic (basal) life-sustaining functions, including:
- Breathing
- Circulation
- Nutrient processing
- Cell production
This calculator uses the Mifflin-St Jeor Equation, which is considered the most accurate for calculating BMR in most adults.
To maintain your weight: Consume calories equal to your BMR × activity factor.
To lose weight: Consume fewer calories than this number.
To gain weight: Consume more calories than this number.