BMR Calculator
Estimate basal metabolic rate — calories your body may burn at rest — from weight, height, age, and sex.
How it works
- 1
Enter your values in the fields.
- 2
Results update automatically as you type.
- 3
Use Reset to clear and try another scenario.
Why use this calculator
- Mifflin-St Jeor estimate
- Quick inputs
- Foundation for TDEE
- Educational only
What BMR means
Basal metabolic rate is an estimate of energy used at complete rest. Real-world needs are usually higher because of daily activity.
Next step
After BMR, use the calorie or TDEE calculators to include activity level.
Frequently asked questions
Is BMR the same as TDEE?
No. TDEE multiplies BMR by activity.
Which equation is used?
Mifflin-St Jeor.
Why sex is asked
The equation uses different constants commonly applied for male and female adults.