About this calculator

Uses the Mifflin–St Jeor equation. BMR is calories burned at rest; multiplying by activity factor gives TDEE — the calories you need to maintain weight.

Formula: BMR (M) = 10w + 6.25h − 5a + 5, (F) = 10w + 6.25h − 5a − 161

Frequently asked questions

What does the BMR & TDEE Calculator do?

Estimate Basal Metabolic Rate and Total Daily Energy Expenditure. Uses the Mifflin–St Jeor equation. BMR is calories burned at rest; multiplying by activity factor gives TDEE — the calories you need to maintain weight.

Is the BMR & TDEE Calculator free to use?

Yes. Every calculator on Calcora is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the BMR & TDEE Calculator?

Results are calculated in real time using the formula BMR (M) = 10w + 6.25h − 5a + 5, (F) = 10w + 6.25h − 5a − 161. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified fitness & health professional before committing to a purchase or a job.

What inputs does the BMR & TDEE Calculator need?

Enter values for: Weight (kg), Height (cm), Age, Sex, Activity. Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the BMR & TDEE Calculator on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcora.