Weight for girls at 3 years
At 3 years, the median weight for girls on the CDC 2000 growth charts is 13.9 kg (30 lb 9 oz): half of girls this age weigh less and half more. The middle half of girls, from the 25th to the 75th percentile, falls between 12.8 and 15.1 kg, a spread of 2.24 kg. The outer lines of the chart, the 3rd and 97th percentiles, sit at 11.3 and 17.9 kg.
Since 2 years, the median has risen by 1.81 kg over 1 year. By 4 years it reaches 15.8 kg.
For boys at 3 years the median is 14.3 kg, 0.46 kg more than for girls, which is why the charts are drawn separately by sex.
From 2 years CDC recommends its own 2000 growth charts, which draw the 3rd to the 97th percentile; under 2, the WHO charts draw the 2nd to the 98th.
Reading the table: a girl at 3 years who weighs 14.6 kg is at about the 66th percentile, meaning that out of 100 girls this age, about 66 weigh less.
Percentiles at 3 years
Download CSV (all ages)| Percentile | z-score | Metric | Imperial |
|---|---|---|---|
| 3rd | −1.88 | 11.33 kg | 25 lb 0 oz |
| 5th | −1.64 | 11.60 kg | 25 lb 9 oz |
| 10th | −1.28 | 12.03 kg | 26 lb 8 oz |
| 25th | −0.67 | 12.84 kg | 28 lb 5 oz |
| 50th (median) | 0.00 | 13.87 kg | 30 lb 9 oz |
| 75th | +0.67 | 15.08 kg | 33 lb 4 oz |
| 90th | +1.28 | 16.36 kg | 36 lb 1 oz |
| 95th | +1.64 | 17.24 kg | 38 lb 0 oz |
| 97th | +1.88 | 17.87 kg | 39 lb 6 oz |
CDC 2000 charts draw the 3rd to the 97th percentile. Values computed with the LMS method from the published tables (retrieved 2026-10-05).