Calculating your body fat (us navy, male) is straightforward once you know the Navy Body Fat formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Navy Body Fat Calculator.
What is Navy Body Fat?
The Navy Body Fat calculation tells you your body fat (us navy, male) from a few simple inputs. The figure you are solving for here is the body fat (us navy, male), expressed in percent.
The Navy Body Fat formula
This calculation combines several inputs through a multi-step method rather than a single one-line formula. Enter the values below and the calculator resolves each step in order. The inputs it needs are:
- Waist circumference — a value measured in cm. Example: 85 cm.
- Neck circumference — a value measured in cm. Example: 38 cm.
- Height — a value measured in cm. Example: 178 cm.
How to calculate it step by step
- Write down the waist circumference (for example, 85 cm).
- Write down the neck circumference (for example, 38 cm).
- Write down the height (for example, 178 cm).
- Apply the formula above to get your body fat (us navy, male).
- Double-check the result with the Navy Body Fat Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Waist circumference | 85 cm |
| Neck circumference | 38 cm |
| Height | 178 cm |
| Body fat (US Navy, male) | 16.4% |
With waist circumference of 85 cm, neck circumference of 38 cm and height of 178 cm, the body fat (us navy, male) works out to 16.4%.
Example 2
With waist circumference of 170 cm, neck circumference of 38 cm and height of 178 cm, the body fat (us navy, male) works out to 57.3%.
| Result | Value |
|---|---|
| Body fat (US Navy, male) | 57.3% |
Example 3
With waist circumference of 43 cm, neck circumference of 38 cm and height of 178 cm, the body fat (us navy, male) works out to -53.0%.
| Result | Value |
|---|---|
| Body fat (US Navy, male) | -53.0% |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
- These figures are general estimates, not medical advice — check with a qualified professional before acting on them.
Prefer not to do the maths by hand? — the Navy Body Fat Calculator does it instantly, for free, with the formula and a worked example built in.
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