BMR Calculator
Estimate basal metabolic rate with Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle formulas and review daily calorie needs by activity level.
Gender
Height
Weight
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BMR results:
About BMR Calculator
BMR Calculator estimates the calories your body uses at rest. It supports the Mifflin-St Jeor, Revised Harris-Benedict, and Katch-McArdle formulas so you can compare common approaches and quickly extend the estimate to typical activity levels.
How To Use It
The default result shows resting calories first and then expands the estimate to daily calorie burn by activity level.
- Choose the measurement system, gender, age, height, and weight.
- Open More options if you want to switch formulas or enter body fat for Katch-McArdle.
- Click Calculate BMR to review resting calories and the activity table.
Examples
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Imperial example
Gender: Male Age: 30 years Height: 5 ft 11.65 in Weight: 176.4 lb Formula: Mifflin-St Jeor
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Metric example
Gender: Female Age: 28 years Height: 168 cm Weight: 62 kg Formula: Harris-Benedict
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Lean mass formula
Gender: Male Age: 35 years Height: 180 cm Weight: 80 kg Formula: Katch-McArdle Body Fat: 15%
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