Health Calculators
BMR Calculator
Find your Basal Metabolic Rate — the calories your body burns at rest — and your total daily calorie needs.
About the BMR Calculator
Your Basal Metabolic Rate is the number of calories your body burns simply to stay alive at rest. Knowing it is the starting point for any nutrition or fitness plan.
This BMR calculator uses the accurate Mifflin-St Jeor equation and then applies your activity level to estimate your total daily energy expenditure (TDEE).
How to use the BMR Calculator
- Select your gender and enter your age, height and weight.
- Choose your activity level.
- Click Calculate BMR to see your resting and daily calorie needs.
How the calculation works
Men: BMR = 10w + 6.25h − 5a + 5
Women: BMR = 10w + 6.25h − 5a − 161
(w = kg, h = cm, a = years)
Women: BMR = 10w + 6.25h − 5a − 161
(w = kg, h = cm, a = years)
Example
A 28-year-old man, 172 cm and 68 kg, has a BMR of about 1,617 kcal/day, or roughly 2,500 kcal at a moderate activity level.
Frequently asked questions
Basal Metabolic Rate is the energy your body uses at complete rest to maintain vital functions like breathing and circulation.
TDEE multiplies your BMR by an activity factor to estimate total calories burned including movement and exercise.
It uses the Mifflin-St Jeor equation, widely regarded as one of the most accurate for healthy adults.
No, eating only your BMR is usually too low. Use your TDEE as a maintenance guide and adjust for goals.