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BMR & Daily Calorie Calculator
Estimate BMR and maintenance calories using activity level.
Inputs
Adjust values, then calculate.
About this tool
BMR estimates calories your body burns at rest. We use the Mifflin–St Jeor equation, then apply an activity factor to estimate maintenance calories.
How to use
- Select sex, then enter age, height, and weight.
- Choose your activity level realistically.
- Click Calculate to see BMR and maintenance calories.
Example
Input: Male, 28y, 170cm, 70kg, Moderate activity
What you get: BMR and daily maintenance calories (kcal/day).
FAQs
Can I use this for weight loss?
A common approach is maintenance minus 300–500 kcal/day. For medical advice, consult a professional.
Why does activity level matter?
Daily calorie needs depend heavily on movement and lifestyle, not only resting metabolism.
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