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Glossary Health & Fitness

Body fat percentage

Body fat percentage is the share of your total weight that is fat, estimated from tape measurements or skinfolds.

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In more detail

Methods such as the US Navy and Army tape formulas use neck, waist and hip measurements. Lean body mass is weight minus fat mass, and FFMI adjusts it for height.

Try these tools

Body Fat Calculator

Calculate your body fat percentage, body fat mass, and lean body mass using the U.S.

Army Body Fat Calculator

Estimate your body fat percentage using the U.S.

Lean Body Mass Calculator

Calculate your lean body mass (fat-free mass) using the Boer, James, and Hume formulas from just your height, weight, and sex.

FFMI Calculator

Calculate your fat-free mass index (FFMI) and height-normalised FFMI from weight, height and body fat percentage, with lean and fat mass.

Body Type Calculator

Estimate your body type (ectomorph, mesomorph, or endomorph) using the wrist-circumference-to-height frame-size ratio.

See also

  • Glossary BMI (body mass index)
    BMI is body weight in kilograms divided by height in metres squared, a screening number for whether weight is in a healthy range.
  • Glossary Waist-to-hip ratio
    The waist-to-hip ratio divides waist circumference by hip circumference, a measure of where body fat is carried.
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