Lean Mass Resting Metabolism Calculator

Given my lean mass percentage, what is my resting metabolism (or how many calories would I burn each day even if I didn't move a muscle)?

If you know your lean body mass, this calculator uses the formula developed by Katch and McArdle to give you a very good estimate of your resting metabolism (RMR) (also known as basal metabolism or BMR), which is the minimum calories you burn each day for your body to keep everything functioning.

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Input Fields

TitleA title for these calculator results that will help you identify it if you have printed out several versions of the calculator.

US/MetricChoose US or Metric units.

WeightYour current scale weight.

Lean MassThe portion of your weight that is lean (not fat).

Output Fields

Resting MetabolismResting Metabolism (RMR) (also known as Basal Metabolism or BMR) is the minimum calories your body needs each day just to perform its most basic functions.

Lean MassThe portion of your weight that is lean (not fat).

Fat MassThe portion of your weight that is fat.