Health tool
Calorie Calculator
Estimate BMR, maintenance calories, and mild calorie targets using basic body and activity inputs.
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How To Use Calorie Calculator
Quick notes to help you understand the result before you act on it.
Overview
Use this calorie calculator to estimate daily energy needs from body details and activity level.
The result includes BMR, maintenance calories, and mild gain or loss targets for planning.
Calorie Estimate Formula
- BMR is estimated with the Mifflin-St Jeor equation.
- Maintenance calories = BMR x activity multiplier.
- Mild gain and loss targets adjust maintenance calories by about 250 calories.
Practical Tips
- Treat results as estimates, not medical advice.
- Activity level is often the biggest source of error.
- Speak with a qualified professional for medical, pregnancy, or eating-disorder concerns.
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FAQ
Common questions about this tool.
Is this calorie calculator medical advice?
No. It is a general planning estimate.
Can calorie needs change?
Yes. They vary with activity, body composition, health, and routine.