Body Fat Calculator
Estimate body fat percentage using the U.S. Navy method.
How To Use This Body Fat Calculator
Measure your neck, waist, and height. Women should also enter hip measurement. Use a flexible measuring tape, stand naturally, and keep the tape level around the body for more consistent results.
This method gives an estimate rather than a lab measurement. Small changes in tape position can change the result, so it is best used the same way each time when tracking progress.
Normal Body Fat Values
Healthy body fat ranges depend on sex and age. As a simple adult guide, many men fall in a healthy range around 10% to 20%, while many women fall in a healthy range around 18% to 28%.
Values below or above those ranges are not automatically a problem, but they do deserve context. Athletic, age-related, and medical factors can all change what is realistic or appropriate. You can compare this result with the BMI Calculator for a broader body measurement view.