MedDesk

Body mass index

Fluids & paediatrics

With the WHO classes and the lower Asian-population action points that apply to much of the Gulf and South Asian population.

What you enter

  • Height (cm or in)
  • Weight (kg or lb)
FORMULABMI = weight (kg) ÷ height (m)²
SourceWHO. Obesity: preventing and managing the global epidemic, 2000; NICE NG246 Overweight and obesity management (2025) ethnicity thresholdsReviewedFormula and thresholds checked against the source on 2026-08-22. If the source updates, this line will say so.