Children under 5 years of age
For children under 5 years of age:
overweight is weight-for-height greater than 2 standard deviations above WHO Child Growth Standards median; and
obesity is weight-for-height greater than 3 standard deviations above the WHO Child Growth Standards median.
Charts and tables: WHO child growth standards for children aged under 5 years
Children aged between 5–19 years
Overweight and obesity are defined as follows for children aged between 5–19 years:
overweight is BMI-for-age greater than 1 standard deviation above the WHO Growth Reference median; and
obesity is greater than 2 standard deviations above the WHO Growth Reference median.