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Health
MathWHO Growth Chart Calculator
Calculate child growth percentiles and Z-scores using WHO growth standards. Track height and weight development for children 0-19 years old.
What is Percentile?
Percentile shows how a child compares to other children of the same age and gender. For example, if a child is in the 60th percentile for height, 60% of children their age are shorter.
What is Z-score?
Z-score indicates how many standard deviations a measurement is from the average. It's a more precise indicator used by healthcare professionals.
| Z-score | Classification |
|---|---|
| < -3 | Severely stunted |
| -3 to -2 | Stunted |
| -2 to +2 | Normal |
| +2 to +3 | Tall |
| > +3 | Very tall |
What are WHO Growth Charts?
WHO Growth Charts are international standards developed by the World Health Organization to assess the growth and development of children from birth to 19 years of age.
These charts are based on data from children raised under optimal conditions and provide a benchmark for healthy growth across different populations worldwide.
Age Groups
- 0-5 years: WHO Child Growth Standards for infants and young children, based on the WHO Multicentre Growth Reference Study (MGRS).
- 5-19 years: WHO Growth Reference for school-age children and adolescents, reconstructed from the 1977 NCHS/WHO growth reference.
Why are Growth Charts Important?
Growth charts help:
- Monitor child growth over time
- Identify potential growth problems early
- Assess nutritional status
- Track the impact of health interventions
- Compare growth across different populations