How accurate is this method?

While the Navy method has a 3-4% margin of error compared to clinical tests, it is one of the most practical and reliable ways to measure at home.

Body Fat Calculator

This tool estimates your body fat percentage using your tape measurements based on the US Navy method.

Sex

Height

Neck Circumference

Measure just below the Adam's apple.

Waist Circumference

Measure at the navel.

16.9%

0%55%

Calculation Method

About

Knowing your body fat percentage instead of just BMI is a much better indicator for understanding your true fitness level.

How to use

1. Enter your height, neck, and waist measurements.
2. For women, also include your hip measurement.
3. Click calculate.

Frequently Asked Questions

How accurate is this method?: While the Navy method has a 3-4% margin of error compared to clinical tests, it is one of the most practical and reliable ways to measure at home.

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Embed this tool

Copy the code below and paste it into your site's HTML to embed this tool for free. The snippet includes an attribution link back to the source.

<iframe src="https://tooldict.com/embed/en/body-fat-calculator" title="Body Fat" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:16px;max-width:680px" loading="lazy"></iframe>
<p style="font:13px/1.5 sans-serif">Powered by <a href="https://tooldict.com/en/body-fat-calculator" target="_blank" rel="noopener">Body Fat</a> — Tooldict</p>