Body Fat Calculator
Estimate your body fat percentage using the US Navy Method
This calculator uses the U.S. Navy Method to estimate your body fat percentage. It is widely accepted as one of the most accurate ways to measure body composition using a simple tape measure.
Calculator Inputs
Height without shoes
Measure below the larynx (Adam's apple)
Measure at the navel/belly button level
Measure at the widest point (Women only)
Results
Enter values above to see your results
How It Works
The U.S. Navy formula uses body circumference measurements (neck, waist, and hips for women) combined with height to estimate body density and fat percentage.
Tips & Best Practices
- •Measure your neck just below the larynx (Adam's Apple)
- •Measure waist at the navel (belly button) level for men, and at the narrowest point for women
- •Measure hips at the widest point (women only)
- •Take measurements 3 times and average them for best accuracy
- •Pull the tape measure tight, but not so tight that it pinches skin
Frequently Asked Questions
How accurate is the Navy Method?
The Navy Method is generally accurate within 3-4% when measurements are taken correctly. It is considered a good alternative to expensive DEXA scans or difficult caliper tests.
What is a healthy body fat percentage?
For men, 14-24% is generally considered healthy. For women, 21-31% is considered healthy. Athletes often have lower percentages.
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