Body Fat Percentage Calculator
Estimate your body fat percentage using the US Navy method with simple body measurements.
Calculate Body Fat %
Enter your measurements above.
US Navy Method
Simple and reliable estimate using circumference measurements.
What is Body Fat Percentage?
Body fat percentage is the amount of fat in your body compared to your total body weight. It’s a better health indicator than weight or BMI alone.
How to Use This Calculator
Select your gender, then enter your waist, neck, and height measurements in centimeters. The calculator uses the US Navy method for a quick and reliable estimate.
Frequently Asked Questions
How accurate is this calculator?
It uses the US Navy method, which is a well-established and reasonably accurate field method. For clinical accuracy, a DEXA scan is best.
Do I need to measure in cm or inches?
This calculator uses centimeters. Convert inches to cm by multiplying by 2.54 if needed.
What is a healthy body fat percentage?
Healthy ranges vary by age and gender. Generally: Men 10-20%, Women 18-28% is considered healthy.
Should I measure in the morning or evening?
Measure consistently at the same time of day (preferably morning) for the most accurate tracking.
Can women use this calculator?
Yes. The formula adjusts automatically based on the gender you select.