Navy Body Fat Calculator
Calculate your body fat percentage using the US Navy circumference method, a widely used and validated formula.
Measurements
Measure at navel level
Measure below the larynx
Measurement Tips
- • Use a flexible measuring tape
- • Measure directly on skin or thin clothing
- • Stand relaxed, do not suck in stomach
- • Keep tape level and snug (not tight)
- • Take multiple measurements for accuracy
Body Fat Percentage
16.9%
Fitness
Good fitness level.
Body Fat Categories
Essential Fat2-5%
Athletic6-13%
Fitness14-17%
Average18-24%
Obese25%+
About the Navy Method
The US Navy body fat formula was developed by Hodgdon and Beckett at the Naval Health Research Center. It uses circumference measurements to estimate body fat percentage with reasonable accuracy (within 3-4% of more precise methods like hydrostatic weighing).
Formula Used
BF% = 495 / (1.0324 - 0.19077 * log10(waist - neck) + 0.15456 * log10(height)) - 450