Body Fat Percentage Calculator interactive tool
Calculator
US Navy method: body fat estimated from height, neck, waist, and (for women) hip. Measure in cm at the narrowest/widest points.
Result
13.7%
What Is Body Fat Percentage?
Knowing your body fat percentage gives you a much better picture of your physical fitness and health than body weight or BMI alone. It distinguishes between the weight that comes from fat and the weight that comes from lean mass (muscle, bone, water). This body fat percentage calculator provides an easy way to estimate this crucial metric.
The US Navy Method for Estimating Body Fat
This calculator uses the US Navy Tape Measure method, which is a highly accessible way to estimate body fat without expensive equipment. It requires simple circumference measurements:
- Men: Requires height, neck circumference, and waist circumference (measured at the navel).
- Women: Requires height, neck, waist (at the narrowest point), and hip circumference (at the widest point).
Accuracy and Usage of this Body Fat Calculator
While not as perfectly accurate as a DEXA scan or hydrostatic weighing, the tape measure method is fantastic for tracking trends over time. If your estimated body fat percentage is trending downward while your weight stays the same, you are successfully losing fat and gaining muscle (body recomposition). Remember, this body fat calculator is a tool for estimation and tracking, not a substitute for professional medical advice.
How To Use the Body Fat Percentage Calculator
- Select your biological sex (male or female).
- Enter your height in centimeters, and then your neck and waist circumference in centimeters.
- If you are female, also enter your hip circumference in centimeters.
- Ensure measurements are taken accurately: neck at the smallest point, waist at the navel (men) or narrowest point (women), and hips at the widest point.
- The body fat percentage calculator will display your estimated body fat percentage and categorize your fitness level.
- Use the Example button to load sample values, or Reset to clear all fields for a new calculation.