How it works
Fill in the 1 field above and Resting Energy Expenditure Calculator calculates the result instantly, recalculating as you change any value. It applies the formula ≈24 kcal per kg per day. The math runs locally in your browser — nothing is sent to a server.
Formula
≈24 kcal per kg per dayExamples
- Weight 75 kg → REE: 1,800 kcal/day
Frequently asked questions
How do I use the Resting Energy Expenditure Calculator?
Enter your values in the 1 input field and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
What formula does the Resting Energy Expenditure Calculator use?
It uses ≈24 kcal per kg per day. The calculation is performed in your browser using standard, well-established math for accurate results.
Is my data private?
Yes. The Resting Energy Expenditure 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 Energy Expenditure 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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