Fitness & health
Body Fat Calculator
Measure first thing in the morning, relaxed, tape snug but not pressing. Take each measurement twice and use the average.
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Health, fitness and nutrition content on this site is general information, not medical advice. Talk to a qualified professional about your own situation.
How this is worked out
US Navy (Hodgdon & Beckett, metric): men 495 ÷ (1.0324 − 0.19077 log₁₀(waist − neck) + 0.15456 log₁₀(height)) − 450; women 495 ÷ (1.29579 − 0.35004 log₁₀(waist + hip − neck) + 0.22100 log₁₀(height)) − 450. Categories follow the American Council on Exercise.
Questions people ask
How close is the tape method to a DEXA scan?
Typically within 3–4 percentage points. It is best for tracking your own change over time with the same tape and technique.