Body Fat Calculator

Name: ToolPilot Global Technologies
Address: US
Price range: $0

Estimate your body fat percentage using the U.S. Navy circumference method.

Unit System

Gender

Age (years)

yrs

Height (cm)

Weight (kg)

Waist Circumference (cm)

Neck Circumference (cm)

Body Fat Result

Body Fat Category:Fitness

16.2%

Fat Mass12.2 kg

Lean Body Mass62.8 kg

MethodUS Navy Method

Medical & Health DisclaimerThis calculator provides general educational estimates based on standard health formulas. Results are for informational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider regarding a medical condition.

U.S. Navy Body Fat Formula

Male %BF = 86.010 × log10(waist - neck) - 70.041 × log10(height) + 36.76

Uses circumference measurements of neck, waist, height (and hip for females) to estimate body fat percentage.

Variables Defined

Waist:Waist circumference measured at the narrowest point.
Neck:Neck circumference measured below the larynx.
Hip:Hip circumference (female only) measured at the widest point.

Example Body Fat Calculation

A male measuring 180 cm tall with an 85 cm waist and 38 cm neck.

Given Inputs

Waist - Neck:85 - 38 = 47 cm (18.5 in)
Height in inches:180 / 2.54 = 70.86 in
Calculate log terms:Log10(18.5) and Log10(70.86)

Calculation ResultEstimated Body Fat = 16.5% (Fitness Category)

Frequently Asked Questions about Body Fat Calculator

Body Fat Calculator

Estimate your body fat percentage using the U.S. Navy circumference method.

Unit System

Gender

Age (years)

yrs

Height (cm)

Weight (kg)

Waist Circumference (cm)

Neck Circumference (cm)

Body Fat Result

Body Fat Category:Fitness

16.2%

Fat Mass12.2 kg

Lean Body Mass62.8 kg

MethodUS Navy Method

U.S. Navy Body Fat Formula

Male %BF = 86.010 × log10(waist - neck) - 70.041 × log10(height) + 36.76

Uses circumference measurements of neck, waist, height (and hip for females) to estimate body fat percentage.

Variables Defined

Waist:Waist circumference measured at the narrowest point.
Neck:Neck circumference measured below the larynx.
Hip:Hip circumference (female only) measured at the widest point.

Example Body Fat Calculation

A male measuring 180 cm tall with an 85 cm waist and 38 cm neck.

Given Inputs

Waist - Neck:85 - 38 = 47 cm (18.5 in)
Height in inches:180 / 2.54 = 70.86 in
Calculate log terms:Log10(18.5) and Log10(70.86)

Calculation ResultEstimated Body Fat = 16.5% (Fitness Category)

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Body Fat Calculator

Body Fat Result

U.S. Navy Body Fat Formula

Variables Defined

Example Body Fat Calculation

Given Inputs

Frequently Asked Questions about Body Fat Calculator

Body Fat Calculator

Body Fat Result

U.S. Navy Body Fat Formula

Variables Defined

Example Body Fat Calculation

Given Inputs

Frequently Asked Questions about Body Fat Calculator

Body Fat Result

U.S. Navy Body Fat Formula

Variables Defined

Example Body Fat Calculation

Given Inputs

Frequently Asked Questions about Body Fat Calculator

How accurate is the US Navy body fat method?

What is an ideal body fat percentage?

Body Fat Result

U.S. Navy Body Fat Formula

Variables Defined

Example Body Fat Calculation

Given Inputs

Frequently Asked Questions about Body Fat Calculator

How accurate is the US Navy body fat method?

What is an ideal body fat percentage?