Body Fat Percentage Calculator
Estimate your body fat percentage using simple tape measurements.
Body Fat Percentage Calculator
Estimate body fat percentage using the U.S. Navy tape-measure method.
Features
- U.S. Navy circumference method
- No calipers or special equipment needed
- Separate formula for men and women
- 100% free, no signup
How to Use
Select your sex.
Enter your height, neck, waist (and hip if female).
Click Calculate Body Fat % to see your estimate.
About This Tool
Body Fat Percentage Calculator estimates your body fat using the U.S. Navy circumference method, which only requires a tape measure — no calipers or scans needed. Enter your neck, waist, and (for women) hip measurements to get an instant estimate.
Frequently Asked Questions
It is a widely used field estimate, generally within a few percentage points of more precise methods like DEXA scans.
Measure at the narrowest point of your torso, or at navel level if that is not clearly visible, keeping the tape snug but not compressing the skin.