Inputs
Live updatesBody composition panel
Enter your body measurements to estimate body fat using a well-known circumference method.
This page uses the US Navy circumference method and should be treated as an estimate only.
Health toolBody fat estimate
Body Fat Calculator
Use this page for a practical body fat estimate that shows the measurements behind the number.
What you will get
Clear input, result, and explanation in one place
Body fat estimate
The result shows a percentage estimate and a broad interpretation so the number is easier to understand.
This page uses the US Navy circumference method and should be treated as an estimate only.
Calculator
Enter your values and review the live result
Result
Body fat estimate
The result shows a percentage estimate and a broad interpretation so the number is easier to understand.
Current estimate
Estimated body fat 9.3% (athletic)
This is a circumference-based estimate and should be treated as a screening tool, not a diagnosis.
Supporting details
- Height: 178 cm
- Waist: 84 cm
- Neck: 38 cm
Explanation
How it works
A circumference-based body fat estimate is useful because the formula is transparent and easy to explain to users.
Audience
Who should use this
Measure the body areas carefully, enter them into the calculator, and use the result as a screening estimate rather than a diagnosis.
Common questions
Is this a medical diagnosis?
No. It is a quick estimate based on measurements, not a clinical assessment.
Why include hip measurement for everyone?
The page stays simpler when the same form can support both male and female formulas.
Helpful guide
When BMI is enough, and when body fat is more useful
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