Health Calculator
BMR Calculator
Estimate basal metabolic rate and maintenance calories from age, sex, height, weight, and activity level.
Inputs and estimates
Enter age, sex, height in centimeters, and weight in kilograms. The calculator uses the Mifflin–St Jeor formula for its resting energy estimate.
Reading the result
The BMR result and the activity-adjusted maintenance estimate are separate values. The selected activity level changes the maintenance estimate, while the resting estimate uses the age and body measurements entered above.
Frequently Asked Questions
What does the BMR Calculator calculate?
It gives a fast estimate for bmr calculator inputs and explains the result in plain language.
How do I use the BMR Calculator?
Enter your values, review the assumptions, and click Calculate to see the result instantly.
Is this bmr calculator free to use?
Yes. The calculator is free to use in any modern browser on desktop or mobile.
Can I use this for quick checks?
Yes. It is designed for quick fitness checks before you move on to deeper analysis.
Does the calculator store my data?
No account is required for the base calculator experience unless you later add saved history.