BMR Calculator
Estimate basal metabolic rate (BMR) and total daily energy expenditure (TDEE) from height, weight, age, sex, and activity level.
Last updated: 2026-03-15Sources: 1 sources
What this page helps you check
Estimate your basal metabolic rate and daily energy needs from sex, height, weight, age, and activity level.
- Set a rough calorie target for weight maintenance or change
- Compare how activity level shifts daily energy needs
How to read the result
BMR estimates resting energy needs, while TDEE applies an activity factor. Use the result as a planning baseline and adjust based on real-world changes over time.
FAQ
- What is the difference between BMR and TDEE?
- BMR estimates resting energy needs, while TDEE applies an activity multiplier to estimate daily total energy use.
- How should I choose an activity level?
- Pick the closest match to your typical weekly activity pattern, then adjust in practice if your real-world results differ.
- Which formula does this calculator use?
- This calculator uses the Mifflin-St Jeor equation, a common modern formula for estimating resting energy expenditure.