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BMR Calculator

Enter sex, age, height, weight, activity level, and formula preference to estimate BMR, maintenance calories, and simple cut or gain targets.

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Health use notice

This tool is for general reference only and does not replace medical, nutrition, diagnostic, or treatment advice. For health decisions, confirm the result with a clinician, registered specialist, or official guidance.

BMR

1,669 kcal

Maintenance calories

2,587 kcal

Cut target

2,187 kcal

Gain target

2,837 kcal

How it works

BMR is the minimum energy your body uses at rest. The calculator multiplies BMR by an activity factor to estimate maintenance calories, then shows simple cut and gain references.

Calculation notes

  • Choose either the Mifflin-St Jeor or Harris-Benedict formula.
  • Maintenance calories = BMR × activity factor.
  • Cut and gain targets adjust maintenance calories by a simple planning range.

Frequently asked questions

What is the difference between BMR and maintenance calories?expand_more

BMR is your resting baseline. Maintenance calories add your daily activity on top of that baseline.

Which activity level should I choose?expand_more

Pick the level that best matches both your workout frequency and your everyday movement.

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