FreeWWW Body Fat Calculator
Estimate body fat using three trusted calculation methods
FreeWWW Body Fat Calculator launched on July 20, 2026 with 8 votes, #2,235 of 24,623 launches that month and more than 90% of that year's launches.
What it does
Estimate your body fat percentage using Navy, Army, or BMI-based methods. Compare all three results side by side, view an average estimate, and see your estimated fat mass, lean mass, and fitness category. The calculator supports metric and imperial units, provides measurement guidance, and works free without registration. Results are estimates and not medical advice.
Calculate body fat percentage using Navy, Army, and BMI methods. Advanced body fat calculator with circumference measurements. Free online tool — no signup required.
The most accurate field method, developed by the Naval Health Research Center. Uses height and circumference measurements to estimate body fat within ±3-4%. Used by the U.S. Army for fitness assessments. Similar to Navy method but uses different coefficient values in the calculation formula. Estimates body fat from BMI, age, and gender. Less accurate for athletes or very muscular individuals, but requires no measurements beyond height and weight. Calculate body fat using all three methods simultaneously. Enter all measurements to see how results differ between methods and get an average estimate. Body fat percentage is the proportion of fat tissue in your body relative to your total weight.…from freewww.com
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Body Fat CalculatorApr 2026 · bellyzero.comBody Fat Calculator (US Navy Method & Quick No Tape Method)
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