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Body Fat Categories
What is Body Fat Calculator?
Body Fat Calculator estimates your body fat percentage using the U.S. Navy circumference method. Enter your height, neck, waist, and hip measurements to get an instant estimate without any equipment.
How to Use Body Fat Calculator
- Height —stand straight without shoes
- Waist —for men: at the navel; for women: at the narrowest point
- Hips (women only) —at the widest point
- Neck —just below the larynx (Adam's apple), sloping downward
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About the US Navy Method
The US Navy formula estimates body fat from circumference measurements. It was developed for military fitness assessments and is widely used as a reliable field measurement tool.
Formula (men): 495 / (1.0324 ∀0.19077×log10(waist−neck) + 0.15456×log10(height)) ∀450
Formula (women): 495 / (1.29579 ∀0.35004×log10(waist+hip−neck) + 0.22100×log10(height)) ∀450
Frequently Asked Questions
How accurate is this estimate?
Generally within 3—% of DEXA scan results. For clinical accuracy, consult a healthcare professional.
Is my data sent anywhere?
No. All calculations run in your browser. Nothing is sent to any server.