Body Fat Calculator
Estimate body fat % with the U.S. Navy tape-measurement method.
Body fat
18.0%
Fitness
Fat mass14.4 kg
Lean mass65.6 kg
About the U.S. Navy body fat method
The U.S. Navy methodestimates body fat percentage from a few tape measurements — height, neck, and waist (plus hip for women) — using a logarithmic formula. It needs no calipers and is reasonably accurate for most people, though it's an estimate, not a medical body-composition scan. Measure on bare skin, keep the tape level, and don't pull it tight. All math runs in your browser.
Related: the BMI calculator, the BMR calculator, and the TDEE calculator.
Related Calculators tools
Percentage Calculator
Solve percentage, increase, and change calculations.
Age Calculator
Calculate exact age in years, months, and days.
Unix Timestamp Converter
Convert Unix epoch timestamps to and from human dates.
Tip Calculator
Calculate tip and split the bill between people.
Aspect Ratio Calculator
Solve width or height for a target aspect ratio.
Kilometers to Miles
Convert kilometers into miles instantly.
Miles to Kilometers
Convert miles into kilometers instantly.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin.