Need to check whether your weight sits in a healthy range? The Wivrix BMI & Body Fat Calculator is free, works in your browser, and takes seconds to use.
What this tool does
Calculate your BMI, healthy weight range and estimated body fat percentage. Metric and imperial, with what the result actually means.
Why use Wivrix?
Many online tools ask you to sign up, add a watermark, or upload your files to a server you cannot see. Wivrix is different:
- Private by design — Everything runs in your browser. Your files and input stay on your device — nothing is uploaded to Wivrix.
- Free — no account, no paywall, no file-size tricks
- Fast — open the page and start working
Step-by-step guide
- Choose metric or imperial units.
- Enter your weight and height.
- Add your age and sex to get the body fat estimate as well.
- Read your BMI, which category it falls into, and your healthy weight range.
Common uses
- Check whether your weight sits in a healthy range
- Estimate daily calories for your goal
Frequently asked questions
Do I need an account?
No. Open the tool and use it straight away.
Is the BMI & Body Fat Calculator really free?
Yes. Wivrix tools are free to use. The site is supported by ads that load only after you consent.
Is my data safe?
Everything runs in your browser. Your files and input stay on your device — nothing is uploaded to Wivrix.
Try it now
Open the free BMI & Body Fat Calculator and follow the steps above. If this guide helped, bookmark the tool or share it with someone who needs the same job done quickly.
Related tools
- Calorie & TDEE Calculator — see also our guide
- Unit Converter — see also our guide
- AI Chat — see also our guide
Ready to try it? Open the free BMI & Body Fat Calculator — no sign-up needed.
Open BMI & Body Fat Calculator →