Free online body fat calculator
Body Fat Calculator
Estimate body fat percentage with the US Navy circumference method using neck, waist, and hip measurements.
- Free · No signup
- Instant results
- Private in your browser
- Works on mobile
Result
Estimate body fat % with the US Navy circumference method.
About this body fat calculator
Enter height and circumference measurements to estimate body fat percentage using the US Navy formula. Hip measurement is required for women.
Use this free online body fat calculator when you need a quick, clear estimate without creating an account. Calculations run in your browser on Toolwright, so your inputs stay private. Results are for education and planning — confirm important financial, tax, or health decisions with a qualified professional.
How to use the Body Fat Calculator
- Enter the values asked for in the form — amounts, rates, dates, or measurements depending on the tool.
- Tap calculate to see your result instantly. Adjust inputs anytime to compare scenarios.
- Review the breakdown and FAQs below if you want more context on what the numbers mean.
Why people use Toolwright
- Clear answers — dedicated page for the body fat calculator, built to load fast and stay easy to read.
- Fast & free — no paywall, no email gate, results above the noise.
- US-ready — copy and units aimed at American and Western users.
- One toolkit — jump to related fitness & health tools without leaving the site.
Body Fat Calculator FAQ
How accurate is the Navy method?
It is a practical field estimate. DEXA, Bod Pod, or hydrostatic weighing are more precise clinical methods.
Is this medical advice?
No. These calculators provide estimates only. For diagnosis or treatment decisions, consult a qualified clinician.