Estimate adult body-fat percentage using the
U.S. Navy circumference method. Enter your
height and body measurements below.
Unit System
Sex
Measure around the neck with the tape
level and comfortably snug.
Use a consistent circumference measurement
and keep the tape level without compressing
the skin.
Measure around the widest part of the hips.
Weight is not required to estimate body-fat
percentage. It is used only to estimate fat
mass and lean mass.
Please enter valid measurements.
Your Body Fat Estimate
Estimated Body Fat
0%
Sex
-
Height
-
Method
U.S. Navy Method
Estimated Fat Mass
-
Estimated Lean Mass
-
Measurement Tips
Use a flexible measuring tape.
Keep the tape level around the body.
Keep it snug without compressing the skin.
Take measurements consistently each time.
Women also need a hip circumference for
this formula.
How is body fat estimated?
This calculator uses circumference equations
commonly known as the U.S. Navy method.
For men, the calculation uses:
Height + Neck Circumference
+ Waist Circumference
For women, it uses:
Height + Neck Circumference
+ Waist Circumference
+ Hip Circumference
The calculator converts Metric measurements
internally so the circumference equation is
applied consistently.
Important:
This is only an estimate of body-fat
percentage. Circumference equations can differ
from methods such as DEXA and other body
composition assessments, and results are
sensitive to measurement technique. Do not
use a single result as a diagnosis or as the
sole basis for medical, nutrition or fitness
decisions.
