Body Fat Estimator
Your Measurements
Yrs
LBS
FT
IN
CM
Circumference
IN
IN
Body Fat Percentage
0%
--
US Navy Method
Fat Mass
0 lbs
Lean Mass
0 lbs
Reference Ranges
Essential Fat
2-5%
Athletes
6-13%
Fitness
14-17%
Average
18-24%
Obese
25%+
Methodology
1
The US Navy Method
This calculation is based on the Hodgdon-Beckett formula used by the US Navy. It estimates body density using circumferences of the neck, abdomen, and hips (for women), combined with height.
2
Measurement Tips
Neck: Measure below the larynx (Adam's apple).
Waist: Measure at the navel (men) or the narrowest point (women).
Hips: Measure at the widest point of the buttocks.