Health & Fitness Tools / BMR Calculator
BMR Calculator
Find your Basal Metabolic Rate — the calories your body burns at rest.
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BMR Calculator
Find your Basal Metabolic Rate — the calories your body burns at rest.
Features
- Mifflin-St Jeor equation
- Works for both male and female inputs
- Instant result
- 100% free, no signup
How to Use
Step 1
Enter your sex and age.
Step 2
Enter your height and weight.
Step 3
Click Calculate BMR to see your result.
About This Tool
BMR Calculator estimates your Basal Metabolic Rate, the number of calories your body needs just to keep functioning at complete rest, using the Mifflin-St Jeor equation based on your sex, age, height, and weight.
Frequently Asked Questions
What is BMR used for?
BMR is the baseline used to calculate your total daily calorie needs once activity is factored in — see our TDEE Calculator for that next step.
Is BMR the same for everyone at the same weight?
No, age, sex, and height all affect it, which is why the calculation uses all four inputs together.