Calculator

Body Fat % Estimator

The Navy method estimates body fat from circumference measurements — no calipers, no lab visit. All you need is a tape measure.

Sex

Units

Height (in)

Waist at navel (in)

Neck circumference (in)

About This Estimate

This is an estimate based on circumference measurements using the U.S. Navy method. DEXA or hydrostatic testing provides more accuracy. Body fat % is one data point — it's useful context for programming but not the whole picture.