BMR Calculator
Basal Metabolic Rate is an estimate of calories burned at rest. The screen uses Mifflin–St Jeor and can scale by activity to a daily total.
Calculator Universe is published by SmartAI Labs. The panel above is the interactive BMR Calculator; the rest of this page is ordinary HTML so you can read how the tool works without waiting for the app to boot.
How the BMR Calculator works
Basal Metabolic Rate is an estimate of calories burned at rest. The screen uses Mifflin–St Jeor and can scale by activity to a daily total.
Formula / method. Men: 10w + 6.25h − 5a + 5. Women: 10w + 6.25h − 5a − 161 (w kg, h cm, a years). TDEE ≈ BMR × activity factor.
When to use it. Use it to ballpark a calorie budget. It is not a metabolic-ward measurement.
How to run a comparison
- Open BMR Calculator from Home search, the Health & Vitality hub, or this URL.
- Copy amounts, rates or dates from a document you already have — not a round marketing figure.
- Read the headline result and any breakdown (schedule, slabs, or intermediate rows).
- Change one input at a time so you can see what actually moves the answer.
- Cross-check with a related calculator below, then confirm statutory rates before you act.
Nothing you type is uploaded for server-side processing. Save or screenshot an output if you need it later; we do not keep a server-side history.
Notes and assumptions
Mifflin–St Jeor is an estimate with wide individual error. Illness, lean mass and medication move the real number.
Results are estimates for education and planning only. They are not financial, tax, medical, or legal advice. Slabs, scheme rates and product terms change; verify against official notifications or a qualified professional before acting.
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Browse the full Health & Vitality hub or return to the Calculator Universe home catalog for every tool.
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