Calculate your child's height and weight percentile using WHO growth standards.
Calculate your child's height and weight percentile using WHO growth standards. This tool gives a general estimate based on standard health formulas — it's a starting point for understanding your numbers, not a diagnosis or medical advice.
This calculator tracks a child's height and weight against WHO (World Health Organization) growth charts and provides a percentile ranking. Percentiles show how your child's measurements compare to others of the same age and sex — for example, the 50th percentile means 50% of children that age are shorter and 50% are taller.
A percentile between the 5th and 95th is considered within the normal healthy range for children. A result above the 95th percentile for BMI may indicate excess weight gain; below the 5th percentile may suggest the child is underweight. However, percentiles are screening tools — not diagnoses. Children grow in spurts and many factors (genetics, ethnicity, prematurity) affect growth patterns. Always consult your GP or paediatrician if you have concerns about your child's growth. This tool does not replace professional medical assessment.
Any result between the 5th and 95th percentile is generally considered within the typical healthy range. The 50th percentile simply means average — it does not mean "ideal." A child who consistently tracks at the 80th percentile for height and the 60th for weight is perfectly healthy. What matters most is that growth tracks consistently over time, not where it falls on any single measurement.