Navy Percent Body Fat Calculator
Calculate your body fat percentage using the US Navy circumference method. Enter your height, neck, and waist (and hip for females) measurements.
Published by:
isCalculator Editorial Team
Was this calculator helpful?
How to use this tool?
How to Use the Navy Percent Body Fat Calculator
- Select your gender from the dropdown (Male or Female). For females, an additional hip measurement field will appear.
- Enter your measurements in inches (all values must be positive numbers):
- Height – your total height in inches.
- Neck – circumference at the narrowest point.
- Waist – circumference at the navel level (for males) or smallest point (for females).
- Hip – only for females; measure at the widest point.
- Click "Calculate Body Fat" (or press Enter). Your body fat percentage and category will appear below.
- Use "Reset" to clear all fields and start over.
Tip: All measurements must be in inches. The calculator uses the US Navy formula and automatically clamps results between 0% and 100%.
Previous Results
| Result | Inputs | Date |
|---|
Frequently Asked Questions
It estimates body fat percentage using circumference measurements (neck, waist, height, and hip for females) based on the US Navy method.
It is a convenient estimation with reasonable accuracy for most people, but individual results may vary. For precise measurement, consider professional methods.
All measurements must be in inches. If you have metric measurements, convert them first (1 inch = 2.54 cm).
