// FREE TOOL · FROM VIVE
Body fat, the US Navy way.
A circumference-based estimate of body fat % using the Hodgdon–Beckett (US Navy tape) method.
ESTIMATED BODY FAT
16.9%
CATEGORY
Fitness
MEASURE WHERE
Waist at navel
Neck below larynx
// FAQ
Good to know
How accurate is the tape method?+
Within about 3–4% of underwater weighing for most people — a reasonable free estimate, though not as precise as a DEXA scan or calipers from a trained professional.
Where exactly do I measure?+
Neck: just below the larynx. Waist: at the navel, relaxed. Hip (women only): at the widest point. Measure with a soft tape, snug but not compressing the skin.
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