Health
Body Fat Calculator
Estimate your body fat percentage using the US Navy method. Just a few measurements with a tape measure needed.
Body Fat Percentage
16.5%
Category
Fit
Frequently asked questions
How accurate is the US Navy method?
The US Navy body fat formula has an accuracy of about ±3% compared to hydrostatic weighing. It's one of the most accurate tape-measure methods available and is used by the US military for physical fitness assessments.
How do I take accurate measurements?
For best results: measure neck at its narrowest point (just below the larynx), waist at the narrowest point (usually at belly button level) for men, or at the smallest point for women. Hips should be measured at their widest point. Use a flexible tape measure and keep it level.
What is a healthy body fat percentage?
For men: 10-20% is generally healthy, with 14-17% being the fitness range. For women: 20-30% is healthy, with 21-24% being the fitness range. Athletes typically have lower percentages. Essential fat minimums are ~3-5% for men and ~10-13% for women.
How does body fat differ from BMI?
BMI uses only height and weight and doesn't distinguish between muscle and fat. Body fat percentage directly measures how much of your body is fat vs. lean mass. Two people with the same BMI can have very different body fat percentages.
Estimate your body fat percentage using the US Navy circumference method. Enter your height, neck, waist, and hip measurements to get an accurate body fat estimate without specialized equipment.
The US Navy method is one of the most reliable tape-measure techniques for estimating body composition. Used by the military for fitness assessment, it correlates well with more expensive methods like hydrostatic weighing.