Body Metrics
Body Fat Calculator
Estimate body-fat percentage using the US Navy circumference method.
How the Body Fat % calculator works
Estimate body-fat percentage using the US Navy circumference method.
Every result on MacroMatrixCalc is based on peer-reviewed equations and adjustable for goal, sex, age and activity. Use the form above to update your numbers — results recalculate instantly so you can compare scenarios.
Frequently asked questions
±3–4% versus DEXA for most adults. Trends over weeks are more useful than any single reading.
Recommended products
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