Body Fat Calculator
Estimate body fat percentage using the U.S. Navy circumference method. Enter gender, height, and neck, waist, and hip measurements.
Inputs
Results
Disclaimer: Uses the U.S. Navy circumference method for estimation only. Results are not a substitute for clinical measurement (DEXA, hydrostatic weighing, calipers). Consult a healthcare professional for medical guidance.
About the Body Fat Calculator
The U.S. Navy method estimates body fat from simple tape-measure circumferences. It's not as precise as a DEXA scan or hydrostatic weighing, but it's free, repeatable, and useful for tracking trends.
Measure with a flexible tape, snug but not compressing the skin. Take measurements first thing in the morning for consistency.
Frequently asked questions
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