Sunny Weigh by Peptides Library
Calculator

Body fat calculator, in 30 seconds

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Photo: Holly Mandarich / Unsplash

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Body fat calculator

Two people with the same BMI can differ by 10 points or more in body fat, and a tape measure is the cheapest way to tell them apart.

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Step 1

Pick your sex and enter your height.

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Step 2

Measure your waist at the navel and your neck just below the Adam's apple; women also measure hips at the widest point.

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Step 3

Enter your weight to see fat mass and lean mass.

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The Navy equations (inches)

Men: 86.010 × log10(waist − neck) − 70.041 × log10(height) + 36.76 Women: 163.205 × log10(waist + hip − neck) − 97.684 × log10(height) −…

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Categories and accuracy

Category Women Men Essential fat 10% to 13% 2% to 5% Athletes 14% to 20% 6% to 13% Fitness 21% to 24% 14% to 17% Average 25% to 31% 18% to…

Want the full picture?

Estimate your body fat percentage with the US Navy tape method using your waist, neck and hips, plus fat mass, lean mass and your category.

Tap below for the full page. Not medical advice; talk to your clinician about your care.

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