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Calorie Calculator

Find your maintenance calorie needs using the Mifflin-St Jeor equation, based on your body, age and activity level.

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How to use

  1. Select your sex and enter your age, weight and height.
  2. Choose the activity level that best matches your routine.
  3. Click Calculate to see your BMR and daily maintenance calories.

FAQ

What is BMR?

Basal Metabolic Rate — the calories your body burns at rest just to stay alive.

What is TDEE?

Total Daily Energy Expenditure — your BMR multiplied by an activity factor. This is roughly your maintenance calorie intake.

How does the formula differ for men and women?

Both use 10w + 6.25h − 5a, but men add +5 and women subtract −161.

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More FAQs

Is this calculator free?

Yes, it is completely free with no signup and no limits.

Does it run in my browser?

Yes. Everything is calculated locally on your device — nothing is uploaded.

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