Which is most accurate?

Katch-McArdle if you know your body fat; otherwise Mifflin-St Jeor.

Each formula has different historical datasets and biases.

Does muscle mass change BMR?

Yes, muscle is more metabolically active than fat.

Verified Formula

Compare multiple metabolic rate formulas.

Weight (kg)

Height (cm)

Age

Gender

Body Fat % (Optional) (%)

Real-time clinical computation active

Awaiting Data

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Enter biometric metrics to generate report

This assessment provides statistical probability and mathematical interpretation based on validated clinical equations. It is not a diagnostic tool.

Calculates Basal Metabolic Rate using three industry-standard formulas: Mifflin-St Jeor, Revised Harris-Benedict, and Katch-McArdle.

Mifflin, Harris-Benedict, Katch-McArdle

Primary Use

Health Screening

Standard

WHO Guidelines

Complexity

Clinical Grade