Child Growth Chart: Height & Weight Standards for Ages 0-6 Online Query Tool
Based on China's National Health Commission WS/T 423-2022 standard, providing an online child growth chart with weight-for-age, height-for-age, BMI, and head circumference references for boys and girls aged 0-83 months.
Child Growth Chart · Query Results
Select gender and enter age in months, then click query
Based on WS/T 423-2022 National Health Standard
What is a Child Growth Chart? Understanding the WS/T 423-2022 Growth Standards
The "Growth Standard for Children Under 7 Years of Age" (WS/T 423-2022) is the authoritative health industry standard released by the National Health Commission of the People's Republic of China. Officially published on September 19, 2022, and implemented on March 1, 2023, it serves as the most current and authoritative child growth chart and height-weight standard table in China. This new standard supersedes the older WS/T 423-2013, extending the evaluation age range from under 5 years to under 7 years (less than 84 months) and introduces head circumference evaluation indicators and a percentile evaluation method. A child's height and weight are the most direct indicators of their physical development, and parents often turn to a child height weight chart to understand if their child is growing appropriately. This digital growth chart tool simplifies that process, letting you compare a child's measurements against the national median for their age and sex, functioning as both a baby height and weight chart and an older child growth tracker. The underlying theory of these standards relies on large-scale, cross-sectional surveys of healthy children across China, statistically smoothed to create percentile curves that represent typical growth patterns. By plotting an individual child's measurements on these curves, practitioners and parents can determine if the child is following a normal growth trajectory or if there may be concerns requiring further investigation. Data Source: Official Website of the National Health Commission.
Evaluation Methods and Classification of Child Growth
This standard provides two evaluation systems: the percentile method and the standard deviation method. The percentile method divides growth levels into five tiers: below P3 is "Low," P3 to P25 is "Medium-Low," P25 to P75 is "Medium," P75 to P97 is "Medium-High," and above P97 is "High." The standard deviation method uses -2SD, -1SD, +1SD, and +2SD as cut-off points for level determination. These two methods can be cross-referenced, forming a complete evaluation framework for tracking child growth over time. Understanding these classifications helps a parent move beyond a simple height weight chart and appreciate the statistical distribution behind the numbers. The percentile system is particularly intuitive, directly telling you what percentage of the reference population a child's measurement exceeds. For instance, if a girl's height is at the 75th percentile, she is taller than 75% of her peers, a valuable insight when using any girls height chart.
Complete Percentile Reference Table for Boys Aged 0-6 Years
Data Source: National Health Commission WS/T 423-2022, Tables A.1 & A.3
Table 1: Weight-for-age Percentiles for Boys Under 7 (kg)
| Age | P3 | P10 | P25 | P50 | P75 | P90 | P97 |
|---|---|---|---|---|---|---|---|
| 0 month | 2.8 | 3.0 | 3.2 | 3.5 | 3.7 | 4.0 | 4.2 |
| 1 month | 3.7 | 3.9 | 4.2 | 4.6 | 4.9 | 5.2 | 5.6 |
| 2 month | 4.7 | 5.0 | 5.4 | 5.8 | 6.2 | 6.7 | 7.1 |
| 3 month | 5.5 | 5.9 | 6.3 | 6.8 | 7.3 | 7.8 | 8.3 |
| 4 month | 6.1 | 6.5 | 7.0 | 7.5 | 8.1 | 8.6 | 9.2 |
| 5 month | 6.6 | 7.0 | 7.5 | 8.0 | 8.6 | 9.2 | 9.8 |
| 6 month | 6.9 | 7.4 | 7.9 | 8.4 | 9.1 | 9.7 | 10.3 |
| 7 month | 7.2 | 7.7 | 8.2 | 8.8 | 9.5 | 10.1 | 10.8 |
| 8 month | 7.5 | 8.0 | 8.5 | 9.1 | 9.8 | 10.4 | 11.1 |
| 9 month | 7.7 | 8.2 | 8.7 | 9.4 | 10.1 | 10.8 | 11.5 |
| 10 month | 7.9 | 8.4 | 9.0 | 9.6 | 10.3 | 11.0 | 11.8 |
| 11 month | 8.1 | 8.6 | 9.2 | 9.8 | 10.6 | 11.3 | 12.0 |
| 1 yr | 8.3 | 8.8 | 9.4 | 10.1 | 10.8 | 11.5 | 12.3 |
| 1 yr 3 mo | 8.8 | 9.3 | 9.9 | 10.7 | 11.4 | 12.2 | 13.0 |
| 1 yr 6 mo | 9.3 | 9.9 | 10.5 | 11.3 | 12.1 | 12.9 | 13.8 |
| 1 yr 9 mo | 9.8 | 10.5 | 11.1 | 11.9 | 12.8 | 13.7 | 14.6 |
| 2 yr | 10.4 | 11.0 | 11.7 | 12.6 | 13.5 | 14.4 | 15.4 |
| 2 yr 6 mo | 11.2 | 12.0 | 12.7 | 13.7 | 14.7 | 15.7 | 16.7 |
| 3 yr | 12.0 | 12.8 | 13.6 | 14.6 | 15.8 | 16.9 | 18.0 |
| 3 yr 6 mo | 12.8 | 13.7 | 14.6 | 15.7 | 16.9 | 18.1 | 19.4 |
| 4 yr | 13.6 | 14.5 | 15.5 | 16.7 | 18.1 | 19.4 | 20.8 |
| 4 yr 6 mo | 14.5 | 15.4 | 16.5 | 17.9 | 19.3 | 20.8 | 22.4 |
| 5 yr | 15.3 | 16.4 | 17.6 | 19.1 | 20.7 | 22.4 | 24.2 |
| 5 yr 6 mo | 16.2 | 17.4 | 18.7 | 20.3 | 22.2 | 24.0 | 26.0 |
| 6 yr | 17.1 | 18.3 | 19.8 | 21.6 | 23.6 | 25.7 | 27.9 |
| 6 yr 9 mo | 18.2 | 19.7 | 21.3 | 23.4 | 25.7 | 28.0 | 30.6 |
Table 2: Length/Height-for-age Percentiles for Boys Under 7 (cm)
Applies to length under 2 years, height from 2 to under 7 years.
| Age | P3 | P10 | P25 | P50 | P75 | P90 | P97 |
|---|---|---|---|---|---|---|---|
| 0 month | 47.6 | 48.7 | 49.9 | 51.2 | 52.5 | 53.6 | 54.8 |
| 1 month | 51.3 | 52.5 | 53.8 | 55.1 | 56.5 | 57.7 | 59.0 |
| 2 month | 54.9 | 56.2 | 57.5 | 59.0 | 60.4 | 61.7 | 63.0 |
| 3 month | 58.0 | 59.4 | 60.7 | 62.2 | 63.7 | 65.1 | 66.4 |
| 4 month | 60.5 | 61.9 | 63.3 | 64.8 | 66.4 | 67.8 | 69.1 |
| 5 month | 62.5 | 63.9 | 65.4 | 66.9 | 68.5 | 69.9 | 71.3 |
| 6 month | 64.2 | 65.7 | 67.1 | 68.7 | 70.3 | 71.8 | 73.2 |
| 7 month | 65.7 | 67.2 | 68.7 | 70.3 | 71.9 | 73.4 | 74.9 |
| 8 month | 67.1 | 68.6 | 70.1 | 71.7 | 73.4 | 74.9 | 76.4 |
| 9 month | 68.3 | 69.8 | 71.4 | 73.1 | 74.7 | 76.3 | 77.8 |
| 10 month | 69.5 | 71.0 | 72.6 | 74.3 | 76.0 | 77.6 | 79.1 |
| 11 month | 70.7 | 72.2 | 73.8 | 75.5 | 77.3 | 78.8 | 80.4 |
| 1 yr | 71.7 | 73.3 | 74.9 | 76.7 | 78.5 | 80.1 | 81.6 |
| 1 yr 3 mo | 74.8 | 76.5 | 78.1 | 80.0 | 81.8 | 83.5 | 85.1 |
| 1 yr 6 mo | 77.7 | 79.4 | 81.2 | 83.1 | 85.0 | 86.8 | 88.5 |
| 1 yr 9 mo | 80.5 | 82.3 | 84.1 | 86.1 | 88.1 | 89.9 | 91.7 |
| 2 yr | 82.4 | 84.2 | 86.1 | 88.2 | 90.3 | 92.2 | 94.0 |
| 2 yr 6 mo | 87.0 | 88.9 | 91.0 | 93.2 | 95.4 | 97.4 | 99.4 |
| 3 yr | 90.9 | 93.0 | 95.1 | 97.5 | 99.9 | 102.0 | 104.1 |
| 3 yr 6 mo | 94.4 | 96.6 | 98.8 | 101.3 | 103.8 | 106.1 | 108.3 |
| 4 yr | 97.6 | 99.9 | 102.3 | 104.9 | 107.5 | 109.8 | 112.2 |
| 4 yr 6 mo | 100.8 | 103.2 | 105.7 | 108.4 | 111.1 | 113.6 | 116.0 |
| 5 yr | 104.1 | 106.6 | 109.1 | 112.0 | 114.8 | 117.4 | 119.9 |
| 5 yr 6 mo | 107.2 | 109.9 | 112.5 | 115.5 | 118.4 | 121.1 | 123.7 |
| 6 yr | 110.3 | 113.0 | 115.7 | 118.8 | 121.9 | 124.6 | 127.3 |
| 6 yr 9 mo | 114.5 | 117.4 | 120.3 | 123.5 | 126.7 | 129.6 | 132.5 |
Table 3: BMI-for-age Percentiles for Boys Under 7 (kg/m²)
| Age | P3 | P10 | P25 | P50 | P75 | P90 | P97 |
|---|---|---|---|---|---|---|---|
| 0 month | 11.2 | 11.8 | 12.5 | 13.2 | 14.0 | 14.8 | 15.5 |
| 1 month | 13.0 | 13.6 | 14.3 | 15.1 | 16.0 | 16.8 | 17.6 |
| 2 month | 14.3 | 15.0 | 15.8 | 16.7 | 17.6 | 18.5 | 19.5 |
| 3 month | 14.9 | 15.7 | 16.5 | 17.4 | 18.5 | 19.5 | 20.5 |
| 4 month | 15.2 | 16.0 | 16.8 | 17.8 | 18.8 | 19.9 | 21.0 |
| 5 month | 15.3 | 16.1 | 16.9 | 17.9 | 19.0 | 20.0 | 21.1 |
| 6 month | 15.3 | 16.1 | 16.9 | 17.9 | 18.9 | 20.0 | 21.1 |
| 9 month | 15.2 | 15.9 | 16.7 | 17.6 | 18.6 | 19.6 | 20.7 |
| 1 yr | 14.9 | 15.5 | 16.3 | 17.1 | 18.1 | 19.1 | 20.1 |
| 1 yr 6 mo | 14.3 | 14.9 | 15.6 | 16.4 | 17.2 | 18.1 | 19.1 |
| 2 yr | 14.1 | 14.7 | 15.3 | 16.1 | 17.0 | 17.9 | 18.8 |
| 2 yr 6 mo | 13.9 | 14.4 | 15.0 | 15.8 | 16.6 | 17.4 | 18.4 |
| 3 yr | 13.7 | 14.2 | 14.8 | 15.5 | 16.3 | 17.2 | 18.1 |
| 4 yr | 13.4 | 14.0 | 14.6 | 15.3 | 16.1 | 17.0 | 17.9 |
| 5 yr | 13.3 | 13.8 | 14.5 | 15.3 | 16.2 | 17.1 | 18.2 |
| 6 yr | 13.2 | 13.8 | 14.5 | 15.4 | 16.4 | 17.5 | 18.8 |
Table 4: Head Circumference-for-age Percentiles for Boys 0-3 Years (cm)
| Age | P3 | P10 | P25 | P50 | P75 | P90 | P97 |
|---|---|---|---|---|---|---|---|
| 0 month | 31.9 | 32.7 | 33.4 | 34.3 | 35.2 | 36.0 | 36.8 |
| 1 month | 34.8 | 35.5 | 36.2 | 37.0 | 37.8 | 38.5 | 39.2 |
| 2 month | 36.9 | 37.6 | 38.3 | 39.1 | 39.9 | 40.6 | 41.3 |
| 3 month | 38.3 | 39.0 | 39.7 | 40.5 | 41.3 | 42.0 | 42.7 |
| 4 month | 39.4 | 40.1 | 40.8 | 41.6 | 42.4 | 43.1 | 43.9 |
| 5 month | 40.3 | 41.0 | 41.7 | 42.5 | 43.4 | 44.1 | 44.9 |
| 6 month | 41.1 | 41.8 | 42.5 | 43.4 | 44.2 | 44.9 | 45.7 |
| 9 month | 42.8 | 43.5 | 44.3 | 45.1 | 46.0 | 46.7 | 47.5 |
| 1 yr | 43.8 | 44.6 | 45.3 | 46.1 | 47.0 | 47.8 | 48.6 |
| 1 yr 6 mo | 45.1 | 45.8 | 46.5 | 47.4 | 48.2 | 49.0 | 49.8 |
| 2 yr | 46.0 | 46.7 | 47.5 | 48.3 | 49.2 | 50.0 | 50.8 |
| 2 yr 6 mo | 46.6 | 47.3 | 48.1 | 48.9 | 49.8 | 50.6 | 51.5 |
| 3 yr | 47.0 | 47.7 | 48.5 | 49.3 | 50.2 | 51.1 | 51.9 |
Complete Percentile Reference Table for Girls Aged 0-6 Years
Data Source: National Health Commission WS/T 423-2022, Tables A.2 & A.4
Table 5: Weight-for-age Percentiles for Girls Under 7 (kg)
| Age | P3 | P10 | P25 | P50 | P75 | P90 | P97 |
|---|---|---|---|---|---|---|---|
| 0 month | 2.7 | 2.9 | 3.1 | 3.3 | 3.6 | 3.8 | 4.1 |
| 1 month | 3.5 | 3.7 | 4.0 | 4.3 | 4.6 | 4.9 | 5.3 |
| 2 month | 4.4 | 4.7 | 5.0 | 5.4 | 5.8 | 6.2 | 6.6 |
| 3 month | 5.1 | 5.4 | 5.8 | 6.2 | 6.7 | 7.2 | 7.6 |
| 4 month | 5.6 | 6.0 | 6.4 | 6.9 | 7.4 | 7.9 | 8.4 |
| 5 month | 6.0 | 6.4 | 6.9 | 7.4 | 7.9 | 8.5 | 9.1 |
| 6 month | 6.4 | 6.8 | 7.2 | 7.8 | 8.4 | 9.0 | 9.6 |
| 7 month | 6.7 | 7.1 | 7.6 | 8.1 | 8.8 | 9.4 | 10.0 |
| 8 month | 6.9 | 7.4 | 7.9 | 8.4 | 9.1 | 9.7 | 10.4 |
| 9 month | 7.2 | 7.6 | 8.1 | 8.7 | 9.4 | 10.0 | 10.8 |
| 10 month | 7.4 | 7.8 | 8.3 | 9.0 | 9.6 | 10.3 | 11.1 |
| 11 month | 7.6 | 8.0 | 8.6 | 9.2 | 9.9 | 10.6 | 11.4 |
| 1 yr | 7.7 | 8.2 | 8.8 | 9.4 | 10.1 | 10.9 | 11.6 |
| 1 yr 3 mo | 8.3 | 8.8 | 9.3 | 10.0 | 10.8 | 11.6 | 12.4 |
| 1 yr 6 mo | 8.8 | 9.3 | 9.9 | 10.7 | 11.5 | 12.3 | 13.2 |
| 1 yr 9 mo | 9.3 | 9.9 | 10.5 | 11.3 | 12.2 | 13.1 | 14.0 |
| 2 yr | 9.8 | 10.4 | 11.1 | 11.9 | 12.9 | 13.8 | 14.8 |
| 2 yr 6 mo | 10.7 | 11.4 | 12.1 | 13.0 | 14.1 | 15.1 | 16.2 |
| 3 yr | 11.5 | 12.3 | 13.1 | 14.1 | 15.3 | 16.4 | 17.7 |
| 3 yr 6 mo | 12.4 | 13.2 | 14.1 | 15.2 | 16.4 | 17.7 | 19.1 |
| 4 yr | 13.1 | 14.0 | 15.0 | 16.2 | 17.6 | 18.9 | 20.5 |
| 4 yr 6 mo | 13.9 | 14.8 | 15.9 | 17.2 | 18.7 | 20.2 | 21.9 |
| 5 yr | 14.7 | 15.8 | 16.9 | 18.4 | 20.0 | 21.6 | 23.4 |
| 5 yr 6 mo | 15.5 | 16.7 | 18.0 | 19.6 | 21.4 | 23.2 | 25.1 |
| 6 yr | 16.3 | 17.6 | 19.0 | 20.7 | 22.7 | 24.7 | 26.8 |
| 6 yr 9 mo | 17.4 | 18.8 | 20.4 | 22.4 | 24.6 | 26.8 | 29.3 |
Table 6: Length/Height-for-age Percentiles for Girls Under 7 (cm)
Applies to length under 2 years, height from 2 to under 7 years.
| Age | P3 | P10 | P25 | P50 | P75 | P90 | P97 |
|---|---|---|---|---|---|---|---|
| 0 month | 46.8 | 47.9 | 49.1 | 50.3 | 51.6 | 52.7 | 53.8 |
| 1 month | 50.4 | 51.6 | 52.8 | 54.1 | 55.4 | 56.6 | 57.8 |
| 2 month | 53.8 | 55.0 | 56.3 | 57.7 | 59.1 | 60.4 | 61.6 |
| 3 month | 56.7 | 58.0 | 59.3 | 60.8 | 62.2 | 63.5 | 64.8 |
| 4 month | 59.1 | 60.4 | 61.7 | 63.3 | 64.8 | 66.1 | 67.4 |
| 5 month | 61.0 | 62.4 | 63.8 | 65.3 | 66.9 | 68.2 | 69.6 |
| 6 month | 62.7 | 64.1 | 65.5 | 67.1 | 68.7 | 70.1 | 71.5 |
| 7 month | 64.2 | 65.6 | 67.1 | 68.7 | 70.3 | 71.7 | 73.1 |
| 8 month | 65.6 | 67.0 | 68.5 | 70.1 | 71.7 | 73.2 | 74.7 |
| 9 month | 66.8 | 68.3 | 69.8 | 71.5 | 73.1 | 74.6 | 76.1 |
| 10 month | 68.1 | 69.6 | 71.1 | 72.8 | 74.5 | 76.0 | 77.5 |
| 11 month | 69.2 | 70.8 | 72.3 | 74.0 | 75.7 | 77.3 | 78.8 |
| 1 yr | 70.4 | 71.9 | 73.5 | 75.2 | 77.0 | 78.6 | 80.1 |
| 1 yr 3 mo | 73.5 | 75.2 | 76.8 | 78.6 | 80.5 | 82.1 | 83.8 |
| 1 yr 6 mo | 76.5 | 78.2 | 79.9 | 81.9 | 83.8 | 85.5 | 87.2 |
| 1 yr 9 mo | 79.3 | 81.1 | 82.9 | 84.9 | 86.9 | 88.7 | 90.4 |
| 2 yr | 81.2 | 83.0 | 84.9 | 87.0 | 89.1 | 90.9 | 92.8 |
| 2 yr 6 mo | 85.7 | 87.7 | 89.7 | 91.9 | 94.1 | 96.1 | 98.1 |
| 3 yr | 89.7 | 91.8 | 93.9 | 96.2 | 98.5 | 100.7 | 102.7 |
| 3 yr 6 mo | 93.2 | 95.4 | 97.6 | 100.1 | 102.5 | 104.8 | 106.9 |
| 4 yr | 96.5 | 98.8 | 101.1 | 103.7 | 106.3 | 108.6 | 110.9 |
| 4 yr 6 mo | 99.7 | 102.1 | 104.5 | 107.2 | 109.9 | 112.3 | 114.7 |
| 5 yr | 103.0 | 105.5 | 108.0 | 110.8 | 113.6 | 116.1 | 118.6 |
| 5 yr 6 mo | 106.1 | 108.7 | 111.3 | 114.3 | 117.2 | 119.8 | 122.4 |
| 6 yr | 109.0 | 111.7 | 114.5 | 117.5 | 120.6 | 123.3 | 126.0 |
| 6 yr 9 mo | 113.2 | 116.0 | 118.9 | 122.1 | 125.3 | 128.2 | 131.0 |
Table 7: BMI-for-age Percentiles for Girls Under 7 (kg/m²)
| Age | P3 | P10 | P25 | P50 | P75 | P90 | P97 |
|---|---|---|---|---|---|---|---|
| 0 month | 11.1 | 11.7 | 12.3 | 13.1 | 13.8 | 14.5 | 15.3 |
| 1 month | 12.7 | 13.3 | 13.9 | 14.7 | 15.5 | 16.3 | 17.1 |
| 2 month | 13.9 | 14.5 | 15.2 | 16.1 | 17.0 | 17.9 | 18.9 |
| 3 month | 14.4 | 15.1 | 15.8 | 16.7 | 17.7 | 18.7 | 19.8 |
| 4 month | 14.7 | 15.4 | 16.2 | 17.1 | 18.1 | 19.1 | 20.2 |
| 5 month | 14.8 | 15.5 | 16.3 | 17.3 | 18.3 | 19.3 | 20.5 |
| 6 month | 14.9 | 15.6 | 16.4 | 17.3 | 18.4 | 19.4 | 20.5 |
| 9 month | 14.8 | 15.4 | 16.2 | 17.1 | 18.1 | 19.1 | 20.2 |
| 1 yr | 14.5 | 15.1 | 15.8 | 16.7 | 17.6 | 18.5 | 19.6 |
| 1 yr 6 mo | 14.0 | 14.5 | 15.2 | 15.9 | 16.8 | 17.7 | 18.6 |
| 2 yr | 13.8 | 14.4 | 15.0 | 15.8 | 16.6 | 17.4 | 18.4 |
| 2 yr 6 mo | 13.6 | 14.1 | 14.7 | 15.5 | 16.3 | 17.1 | 18.0 |
| 3 yr | 13.4 | 13.9 | 14.5 | 15.3 | 16.1 | 16.9 | 17.9 |
| 4 yr | 13.1 | 13.7 | 14.3 | 15.1 | 15.9 | 16.8 | 17.8 |
| 5 yr | 13.0 | 13.5 | 14.2 | 15.0 | 15.9 | 16.9 | 18.0 |
| 6 yr | 12.9 | 13.5 | 14.1 | 15.0 | 16.0 | 17.1 | 18.3 |
Table 8: Head Circumference-for-age Percentiles for Girls 0-3 Years (cm)
| Age | P3 | P10 | P25 | P50 | P75 | P90 | P97 |
|---|---|---|---|---|---|---|---|
| 0 month | 31.5 | 32.3 | 33.1 | 33.9 | 34.8 | 35.6 | 36.3 |
| 1 month | 34.2 | 34.9 | 35.6 | 36.3 | 37.1 | 37.8 | 38.5 |
| 2 month | 36.2 | 36.8 | 37.5 | 38.2 | 39.0 | 39.6 | 40.3 |
| 3 month | 37.5 | 38.1 | 38.8 | 39.5 | 40.3 | 41.0 | 41.6 |
| 4 month | 38.5 | 39.1 | 39.8 | 40.6 | 41.4 | 42.1 | 42.7 |
| 5 month | 39.3 | 40.0 | 40.7 | 41.5 | 42.3 | 43.0 | 43.7 |
| 6 month | 40.0 | 40.7 | 41.4 | 42.2 | 43.0 | 43.8 | 44.5 |
| 9 month | 41.7 | 42.4 | 43.2 | 44.0 | 44.8 | 45.6 | 46.3 |
| 1 yr | 42.8 | 43.5 | 44.3 | 45.1 | 45.9 | 46.7 | 47.5 |
| 1 yr 6 mo | 44.1 | 44.8 | 45.6 | 46.4 | 47.3 | 48.1 | 48.8 |
| 2 yr | 45.0 | 45.7 | 46.5 | 47.3 | 48.2 | 49.0 | 49.8 |
| 2 yr 6 mo | 45.5 | 46.3 | 47.1 | 47.9 | 48.8 | 49.7 | 50.5 |
| 3 yr | 46.1 | 46.8 | 47.6 | 48.5 | 49.4 | 50.3 | 51.1 |
How to Use the Child Growth Chart Online Query Tool
Step 1: Select Gender Click the "Boy" or "Girl" button to choose the child's gender. Different genders correspond to different datasets in the baby height and weight chart and the child growth chart tables. This initial step is critical because growth trajectories differ significantly between boys and girls; a girls height chart shows different median curves than one for boys, reflecting biological differences in developmental timing and final stature.
Step 2: Enter Age in Months Input the child's exact age in months (0-83 months, covering 0 to 6 years and 11 months) into the age input field. One decimal place is supported; for example, entering "18.5" represents 18 months and 15 days. The tool automatically matches the corresponding age data from the weight-for-height standard chart. Accurate age entry is fundamental to obtaining a valid assessment from any growth reference.
Step 3: Click Query Click the green "Query Growth Chart" button. The system will automatically match the reference data from the WS/T 423-2022 standard child growth and development chart.
Step 4: Review Results The right panel displays the median reference value and percentile level for weight, length/height, BMI, and head circumference (for ages 0-3). It also provides nutritional status notes, making it easy for parents to compare against the child height weight chart. The full height-weight standard tables above are available for detailed month-by-month comparisons. Interpretation of results should be holistic; a single data point on a height weight chart is less informative than the overall growth pattern over multiple measurements.
Frequently Asked Questions About Child Growth Charts
Q: What exactly is a child growth chart and why is it important?
A: A child growth chart is a visual tool used by pediatricians and parents to track a child's physical development over time. By comparing a child's measurements against a standardized reference population, it helps identify potential growth issues early. This tool provides a digital height weight chart based on the latest official Chinese standards for children under 7.
Q: Which growth chart does this tool use as its data source?
A: This tool exclusively uses data from the WS/T 423-2022 "Growth Standard for Children Under 7 Years of Age" published by the National Health Commission of China. It is the most up-to-date official standard, replacing the 2013 version.
Q: What is the difference between a baby height and weight chart and a standard growth chart for older children?
A: A baby height and weight chart typically focuses on the first two years of life, often measuring length (recumbent) instead of standing height. The indicators and the velocity of change are different. This tool covers the entire 0-6 year range, providing an integrated chart that handles this transition, specifically using length-for-age up to 2 years and height-for-age thereafter.
Q: How do I interpret the "P50" and other percentile values on a girls height chart or boys chart?
A: The "P50" value represents the median, meaning 50% of children in the reference population are at or below this measurement. For example, if a girl's height is at P50 on the girls height chart, she is exactly at the average for her age. Values like P25 or P75 represent the lower and upper quartiles of the normal range, respectively.
Q: Why is head circumference only available for ages 0-3?
A: The standard's head circumference percentile and standard deviation data only cover the 0-3 years (0-36 months) age range, as this is the period of most rapid brain growth. After age 3, the rate of head circumference increase slows dramatically, and it becomes a less sensitive indicator for routine screening.
Q: How is the age in months calculated correctly?
A: Age in months is calculated in full months. A child is considered 1 month old 30 days after birth. For premature infants, a corrected age should be used for assessment. This tool does not include a prematurity correction function; for preterm babies, consulting a professional child health doctor is strongly recommended.
Q: Can this tool replace a professional medical diagnosis?
A: No. The query results from this growth chart tool are for reference only and cannot replace a professional diagnosis. If you have any concerns about your child's height, weight, or overall growth, please consult a pediatrician or child health specialist. A child height weight chart is a screening tool, not a diagnostic one.
Q: Is my child's data safe when using this online tool?
A: Absolutely. This tool is built with a pure front-end implementation. All queries are processed locally in your browser. No personal information or measurement data is uploaded to any server or stored remotely.