FFMI calculator
FFMI is like BMI for muscle: lean mass divided by height squared. It helps lifters judge muscle gain independent of fat.
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Normalised FFMI = FFMI + 6.1 × (1.8 − height in m). Don’t know your body fat? Use the body fat calculator first.
FAQ
Frequently asked questions
What is a good FFMI?
For men, about 20 is average for people who train and 22–23 is excellent. Women typically score 3–4 points lower.
What is the natural FFMI limit?
A 1995 study of male lifters found that non-users rarely exceeded a normalised FFMI of about 25.