BMR (Katch-McArdle)

BMR with known body fat %.

Input data

Enter lean mass, or total weight with body fat % — FFM = weight × (1 − %/100).

Lean mass (kg) Body fat % (optional) Total body weight (when using % BF) Activity (PAL, for TDEE)

Mifflin comparison (optional) Age (years) Sex Height (cm) Weight for Mifflin (if different from above)

Abbreviations

…
…
…

Results

Enter data and click Calculate.

BMR (Katch–McArdle):

How the results are calculated

© 2026 Calculators. Free online tools.