Body Composition & Waist Risk

BMI, waist-to-height, waist-to-hip and estimated body fat, explained.

Tool 08 · 1 min · Educational tool

Sex

Midway between lowest rib and hip bone

Widest point — optional

Your result will appear here.
How this works
Model
BMI, WHtR, WHR, Deurenberg body fat (v1.0)
Source
NICE NG246 (2025) waist-to-height; WHO 2008 waist-hip; Deurenberg P et al., Br J Nutr 1991. — reference
Intended use
Education on body shape and central fat.
Population
Adults 18+, not pregnant
Limitations
  • Body fat is a rough population estimate.
  • Lower BMI cut-offs apply to some ethnic groups.
Status
Educational tool · methodology checked 3 November 2026

Educational self-assessment — not a diagnostic test. Results are based on published research and population data and can't account for everything about you. They are not a diagnosis and don't replace advice from a healthcare professional. If you're worried about your health, speak to your GP or call NHS 111.