What is a healthy body fat percentage?

For men: 10-20% is athletic/fit, 20-25% is average. For women: 18-28% is athletic/fit, 28-35% is average. Essential fat is 2-5% for men and 10-13% for women. Body fat percentage is more accurate than BMI for assessing health.

How accurate is the US Navy body fat method?

The US Navy method is accurate within ±3-4% when measurements are taken correctly. It's more accurate than BMI and correlates well with DEXA scans. For best results, measure at the same time of day and ensure tape is snug but not compressing skin.

How do I measure my waist and neck correctly?

Neck: Measure below the larynx (Adam's apple) at the narrowest point. Waist (men): Measure at navel level horizontally. Waist (women): Measure at the narrowest point between ribs and hips. Hips (women only): Measure at the widest point. Stand relaxed, don't suck in.

📐 Formula · U.S. Navy Circumference Method — Hodgdon & Beckett (1984) · Source: U.S. Navy Citation (DTIC) · Wikipedia

Body Fat Calculator

Estimate your relative body composition. Drag the custom circumference sliders to calculate your body fat percentage using the clinically recognized US Navy method.

1. Body Composition Specs

Gender

Male

Female

Age

30 yrs

Height

170 cm / 5'7"

Neck Circumference

38 cm / 15.0"

Waist Circumference

88 cm / 34.6"

Hip Circumference

98 cm / 38.6"

Disclaimer: Circumference-based estimates may vary by body type, ethnicity, and age. Not a substitute for clinical assessment. Consult a healthcare professional for precise body composition analysis.

US NAVY FORMULA

18.5%

Fitness Category

Classification Ranges: Male

Essential Fat 2 - 5%

Athletes 6 - 13%

Fitness 14 - 17%

Acceptable 18 - 24%

Obese >= 25%

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1. Body Composition Specs

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