Complete guide to using Body Fat Calculator — a free online tool by akousa.net.
Get started in seconds — no signup required
The Body Fat Calculator estimates your body fat percentage using two methods: the US Navy circumference method (highly accurate, uses neck/waist/hip measurements) and a BMI-based estimate. It also shows your lean body mass, fat mass, and fitness category.
Opens instantly with no app install.
Use reduced samples and avoid secrets when working with sensitive data.
Download your results in multiple formats
Fully responsive design works on any device
Select your gender and preferred unit system. For the US Navy method, enter your height, neck, waist (and hip for women) measurements. For BMI-based, enter height and weight. Click Calculate to see your body fat percentage and fitness category.
Body Fat Calculator is a free tool for fast everyday work with no signup required for basic use. It helps you get instant results, review them, and move on without installing a separate app.
Developers, designers, students, and everyday users rely on this tool for quick, accurate results. It's especially popular among people who need a reliable utility without installing software or signing up for an account.
Looking at alternatives to Body Fat Calculator? Here's how we compare to similar tools available online.
| Feature | akousa.net | Other tools |
|---|---|---|
| Price | Free forever | Often paid or freemium |
| Privacy | Privacy-conscious workflow | Varies by provider |
| Signup | Not required | Account often required |
| Ads & tracking | None | Ads and trackers common |
| Usage limits | Unlimited | Daily or file-size limits |
Add Body Fat Calculator to your own website with a single line of code — free, no signup required.
Get embed codeBody Fat Calculator is also available as a developer API for use in your own apps and workflows.
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