Body Fat Percentage Calculator
Estimate your body fat percentage using the U.S. Navy circumference method. All you need is a measuring tape — no calipers required. Enter your measurements below for an instant estimate.
Disclaimer: This is an estimate based on the U.S. Navy
circumference method and is less accurate than clinical methods like DEXA
scans or hydrostatic weighing. It is not medical advice.
Sex:
Unit:
Enter your measurements above to calculate your estimated body fat percentage.
How It Works
The U.S. Navy circumference method estimates body fat percentage using measurements of height, neck circumference, and waist circumference (plus hip circumference for women). The formula was developed through research conducted at the Naval Health Research Center and is widely used for its simplicity and reasonable accuracy.
- For men: height, neck, and waist measurements
- For women: height, neck, waist, and hip measurements
For a more detailed picture, try our Lean Body Mass Calculator to find out how much of your body weight is fat-free mass.