Body Fat Calculator

Estimate your body fat percentage using the U.S. Navy circumference method. Free body fat calculator for men and women with fitness category guidance.

body

measurements

Result

-432.2
Body fat below 5% is dangerously low. Verify your measurements.

Frequently Asked Questions

How does the Navy method estimate body fat?▼
It uses circumference measurements (neck, waist, and hip for women) plus height in a validated formula. It's a practical alternative to calipers or DEXA.
What is a healthy body fat percentage?▼
For men, 10-20% is generally healthy; for women, 18-28%. Essential fat minimums are about 2-5% for men and 10-13% for women.

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