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Interactive Body Fat Calculator
HealthEstimate your body fat percentage using the US Navy method.
ttb run body-fat-calculator
in
in
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Tip: Measure your waist at the navel level (for men) or the narrowest point (for women). Measure the neck below the larynx sloping slightly downward to the front. Measure hips at the widest portion of the buttocks (women only).
Estimated Body Fat
13.4%
Fitness
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How to Use Body Fat Calculator
Enter your gender, height, neck, and waist circumference (plus hip circumference for women). The calculator uses the US Navy body fat estimation method to approximate your body fat percentage. Results include your body fat category and lean mass estimate.
1
Enter your parameters
Configure the inputs for the Body Fat Calculator according to your specific needs.
2
View real-time results
The utility instantly processes your request and displays the calculated outputs directly in your browser.
3
Copy or Download
Click the copy icon next to the final output to instantly grab the result, or export it if applicable.
Frequently Asked Questions
How accurate is the US Navy method?+
The US Navy method is accurate within ±3-4% for most people. It's more accurate than BMI for assessing body composition but less precise than DEXA scans or hydrostatic weighing.
What is a healthy body fat percentage?+
For men: 10-20% is considered fit, 20-25% is average. For women: 18-28% is considered fit, 25-31% is average. Essential fat minimums are ~3% for men and ~12% for women.