BMR Calculator
Estimate basal metabolic rate with the Mifflin-St Jeor equation.
Advanced inputs+
How this works
Uses Mifflin-St Jeor: 10 x kg + 6.25 x cm - 5 x age + 5 for men or -161 for women.
Medical disclaimer
Educational tool only — not medical advice. Consult a qualified provider.
Frequently asked questions
What does the BMR Calculator estimate?+
It estimates resting calorie burn from age, sex, height, and weight. The result is a planning estimate, not a diagnosis or personal medical advice.
How accurate is this BMR result?+
Accuracy depends on the inputs and the limits of the formula. Use the result as a reference point and compare it with real-world outcomes over time.
Can I share my result?+
Yes. Change the inputs, use the copy-link button, and the current values are preserved in the URL for reopening or sharing.
Will my last input be remembered?+
Yes. The calculator saves the latest inputs in this browser so a reload can restore the most recent values.
Should I use this for medical decisions?+
No. These calculators are educational tools. Talk with a qualified clinician before making health, pregnancy, nutrition, or training decisions.