Body Fat Calculator

Enter your measurements to estimate body composition.

Sex

Male

Female

Measurement Unit

Height

Body Weight

Waist Circumference

Measure horizontally around the waist.

Neck Circumference

Keep the tape level and comfortably snug.

Your body composition

Estimated Body Fat

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Fat Mass

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Lean Body Mass

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Body Weight

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General reference category

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How it works

Select sex

Choose the sex used by the selected body-fat estimation equation.

Enter height and weight

Enter your current height and body weight using centimetres/kg or inches/lb.

Measure your body

Enter waist and neck measurements. Female users also enter hip circumference.

Review your estimate

View estimated body-fat percentage, fat mass and lean body mass.

Estimation Method

U.S. Navy circumference-based body-fat estimation using height, waist, neck and hip measurements where applicable.

Performance note

This calculator provides an estimate rather than a clinical measurement. Results can differ from DEXA, Bod Pod, skinfold testing and other assessment methods. Measurement technique can also affect the result.

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