Body Fat Calculator

The U.S. Navy method estimates body-fat percentage from circumference measurements and height; it is a screening estimate, not a clinical body-composition test. Formula: Men: BF% = 495 ÷ (1.0324 − 0.19077 log10(waist−neck) + 0.15456 log10(height)) − 450;

Weight (in kilograms): Height (in centimeters): Waist Circumference (in centimeters):

Result:

Estimate Body Fat Percentage

The U.S. Navy method estimates body-fat percentage from circumference measurements and height; it is a screening estimate, not a clinical body-composition test.

Formula: Men: BF% = 495 ÷ (1.0324 − 0.19077 log10(waist−neck) + 0.15456 log10(height)) − 450; Women: BF% = 495 ÷ (1.29579 − 0.35004 log10(waist+hip−neck) + 0.22100 log10(height)) − 450

Use the same units and measurement method expected by the calculator. Results from body measurements, activity levels, or health formulas are estimates and can vary when the underlying inputs or method changes.

Repeat the calculation with the same measurements and method, then compare the result with the displayed formula. Treat the result as an estimate where applicable.

Frequently Asked Questions FAQ

What does Body Fat Calculator calculate?

The U.S. Navy method estimates body-fat percentage from circumference measurements and height; it is a screening estimate, not a clinical body-composition test.

What is the formula for Body Fat Calculator?

The formula used by the calculator is: Men: BF% = 495 ÷ (1.0324 − 0.19077 log10(waist−neck) + 0.15456 log10(height)) − 450; Women: BF% = 495 ÷ (1.29579 − 0.35004 log10(waist+hip−neck) + 0.22100 log10(height)) − 450

What inputs does Body Fat Calculator need?

Enter height and the required neck, waist and, for the women’s method, hip measurements in the same unit system.

How can I verify the Body Fat Calculator result?

Repeat the calculation with the same measurements and method, then compare the result with the displayed formula. Treat the result as an estimate where applicable.

How should I round the Body Fat Calculator result?

Avoid unnecessary precision because many health calculations are estimates. Round the displayed result only as appropriate for the measurement method.

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