Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy method from a few simple measurements, plus a fitness category. No scales or calipers needed.
All measurements in centimetres.
Estimated body fat
16.9%
Fitness
U.S. Navy method — an estimate, not a medical measurement.
About Body Fat Calculator
Body Fat Calculator takes the work out of it. Estimate your body fat percentage using the U.S. Navy method from a few simple measurements, plus a fitness category. No scales or calipers needed. It's a favourite among busy households who want to take care of the details. It's especially handy for planning a balanced meal — the kind of small task that quietly eats up your day. It's part of ChatGBT's free toolkit, with no account required.
Why use Body Fat Calculator?
- Works right in your browser on any device — desktop, tablet or phone.
- Totally free with no account, sign-up or hidden limits.
- Save time — build better routines in seconds instead of doing it by hand.
- Fewer mistakes: let Body Fat Calculator handle the fiddly parts so you don't have to.
- Skip the expensive software — Body Fat Calculator does the job for free.
Body Fat Calculator is ideal for busy households — anyone who wants to take care of the details.
Key features
- Instant results — no waiting around or page reloads.
- Clean, intuitive interface with no learning curve.
- Free forever — no credit card and no trial timer.
- Copy your output in one tap and take it anywhere.
What you can use Body Fat Calculator for
- Planning a balanced meal
- Organising a busy week
- Working out a monthly budget
How to use Body Fat Calculator
- Add your information in the boxes above.
- Pick any options that fit what you need.
- Hit “Generate”.
- Review the output, copy it, and you're done.
Tips for getting the best results
- Try it more than once; small tweaks can noticeably improve the result.
- Bookmark Body Fat Calculator so it's one click away next time you need to take care of the details.
- Pair Body Fat Calculator with the other lifestyle tools on ChatGBT for a full workflow.
Frequently asked questions
Is Body Fat Calculator free?
Yes — Body Fat Calculator is 100% free with no account, subscription or hidden charges. Use it as much as you like.
What makes Body Fat Calculator different?
Body Fat Calculator focuses on doing one job really well, fast and for free, with no setup — so you can take care of the details and get on with your day.
Is my data safe with Body Fat Calculator?
Your input is used only to produce your result and isn't sold or shared. See our privacy policy for the full details.
Do I need to sign up to use Body Fat Calculator?
No sign-up or login is needed. Just open Body Fat Calculator and start straight away.
How much does Body Fat Calculator cost?
Nothing — Body Fat Calculator is free to use, with no trial limits or paywall.
Who should use Body Fat Calculator?
Body Fat Calculator is great for busy households who want to take care of the details — for example, when planning a balanced meal.