BMI & Waist · WHO · IDF 2009
Calculates BMI and shows WHO international, WHO Asian and Taiwan HPA cut-offs side by side; waist circumference is compared with population-specific metabolic-syndrome thresholds.
What this tool does
Calculate BMI against WHO, Asian and Taiwan cut-offs; add waist circumference if you have it.
What you need
Height (cm) and weight (kg); measure waist at the navel at the end of a normal breath.
What the result means
Category and notes; BMI does not separate muscle from fat, and dry-weight changes on dialysis affect it.
BMI
kg/m²
Three cut-off sets compared
Waist interpretation
Measure at end-expiration, midway between the lowest rib and the iliac crest, tape snug but not compressing. Abdominal obesity predicts cardiometabolic risk better than BMI.
Enter the values above
Kidney patients: BMI in dialysis and advanced CKD may be inflated by fluid, and in dialysis populations higher BMI is paradoxically associated with better survival ("obesity paradox"); set weight goals with your nephrologist and dietitian. Most transplant centres require BMI <35–40 for listing.
Privacy: all calculations run on your device; no values are sent to a server or third party. Log-type tools store data only in your browser (localStorage); clearing browsing data removes it.
This is not a diagnosis. It maps the numbers you entered onto published guideline categories; a real assessment needs a clinician, your history, repeat testing and other investigations.
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