Waist-to-Hip Ratio
Waist-to-hip ratio with WHO health-risk bands.
Calculate your waist-to-hip ratio and see which WHO health-risk band you fall in, plus a separate NIH waist-size check.
How this is calculated
Methodology & sources
- WHR bands: WHO Global Health Observatory, Indicator Metadata Registry #3446 — Waist-to-hip ratio
- Waist-size threshold: NIH/NHLBI, Aim for a Healthy Weight
- Waist size and health risk: CDC, Healthy Weight
Privacy — how your data is handled
All math runs in your browser on your device. Nothing you type is sent to a server,
and saved results live only in this browser's local storage. Tools that use live
public data (food databases, weather) request only what they need to display.
📏 Practical toolkit tip — Self-Tightening Body Tape Measure (MyoTape style, ~$7)
Why it helps: Locks around your waist, hips, or neck with consistent spring tension so you don’t accidentally pull tighter from week to week.
Pro tip: Always measure on bare skin after a normal, relaxed exhale first thing in the morning.