Body Fat Calculator
Estimate your body fat percentage with the U.S. Navy method using height, neck, waist and hip measurements. Free.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
Body fat
16.4%
Category Fitness
Fat mass / lean mass 13.1 kg / 66.9 kg
Method U.S. Navy formula
How to use Body Fat Calculator
- 1Enter your numbers or dates.
- 2Results update instantly as you type.
- 3Copy the main result with one click.
Questions
Is Body Fat Calculator free?
Yes. Body Fat Calculator is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does Body Fat Calculator work on my phone?
Yes. Body Fat Calculator works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.
How accurate is it?
Calculations use standard formulas with full floating-point precision. For medical, legal or financial decisions, please confirm with a professional.