How it works
Fill in the 2 fields above and Resting Metabolic Rate (RMR) Calculator calculates the result instantly, recalculating as you change any value. It applies the formula weight × 22 (men) / 21 (women). The math runs locally in your browser — nothing is sent to a server.
Formula
weight × 22 (men) / 21 (women)Examples
- Weight 75 kg → RMR: 1,650 kcal/day
Frequently asked questions
How do I use the Resting Metabolic Rate (RMR) Calculator?
Enter your values in the 2 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
What formula does the Resting Metabolic Rate (RMR) Calculator use?
It uses weight × 22 (men) / 21 (women). The calculation is performed in your browser using standard, well-established math for accurate results.
Is my data private?
Yes. The Resting Metabolic Rate (RMR) Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Resting Metabolic Rate (RMR) Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on health & fitness and the rest of the platform, you can use it as often as you like.
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