Calculators toolsUpdated July 2026
Free BMR / TDEE Calorie Calculator
Calculate your basal metabolic rate and total daily energy expenditure, directly in your browser.
Free online tool
No signup
Instant results
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Enter your age, height, and weight to calculate your BMR and TDEE.
0BMR (calories at rest)
0TDEE (maintenance calories)
0Mild weight loss (-250/day)
0Weight loss (-500/day)
0Weight gain (+250/day)
Your numbers stay in your browser.
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How to calculate your BMR and TDEE
- Enter your sex, age, height, and weight.
- Choose your activity level.
- See your BMR, TDEE, and calorie targets for weight loss or gain.
How this works
BMR is calculated using the Mifflin-St Jeor equation, a widely-used formula for estimating resting energy expenditure, then multiplied by an activity factor to estimate your TDEE (total daily energy expenditure).
Common use cases
- Find out how many calories you need to maintain your weight
- Calculate a calorie target for weight loss or gain
- Check your basal metabolic rate before planning a diet
Frequently asked questions
Is this BMR/TDEE calculator free?
Yes. It is completely free, with no signup and no limits.
What's the difference between BMR and TDEE?
BMR is the calories your body burns at complete rest. TDEE adds your activity level on top of that to estimate your total daily calorie burn.
Is this a substitute for medical advice?
No. This provides a general estimate based on a standard formula, not personalized medical or nutritional advice.