Health · Free & Accurate

Body Fat Percentage Calculator

Calculate body fat percentage based on fat weight and total body weight.

Body Fat Percentage Calculator

Health
Weight of body fat
Total body weight
Result
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Step-by-step explanation

    📐 Formula & Explanation
    Body Fat % = (Fat Mass Weight ÷ Total Body Weight) × 100
    How it works

    Divide fat weight by total weight, or estimate using height and waist/neck circumference measurements.

    💡 Practical Example

    A 180 lbs person with 36 lbs of body fat: (36 ÷ 180) × 100 = 20% body fat.

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    FAQ

    Questions about Body Fat Percentage Calculator

    Body fat percentage is calculated by dividing total fat mass by total body weight and multiplying by 100. Anthropometric methods (such as the US Navy body fat formula) use circumference measurements of neck, waist, and hips alongside height.
    Healthy body fat for men generally ranges between 10% and 20%, while for women it ranges between 18% and 28%.