Body Fat Percentage Calculator
Estimate your body fat percentage with simple measurements.
100% In-Browser • Zero Uploads
No Login Required
About Body Fat Percentage Calculator
Check your body fat percentage from simple waist and neck tape numbers. Fast, free, and private.
100% Client-Side
Your files and data are processed locally in your browser memory. Never uploaded to remote servers.
Zero Login Required
Instant access with no account, no email sign-up, no passwords, and no subscription paywalls.
Instant Speed
Powered by modern WebAssembly and native web APIs for near-instant rendering and zero latency.
Privacy Guaranteed
Zero data retention, no user tracking cookies, and GDPR/HIPAA friendly. Your data remains strictly yours.
All Devices Ready
Fully responsive on desktop, tablet, and mobile devices without installing software or extensions.
How to Use
- Select your gender.
- Enter your height and weight.
- Provide neck, waist, and (for women) hip measurements.
- Calculate your estimated body fat percentage.