Weight for girls at 18 years
At 18 years, the median weight for girls on the CDC 2000 growth charts is 56.2 kg (123 lb 14 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 50.9 and 63.4 kg, a spread of 12.5 kg. The outer lines of the chart, the 3rd and 97th percentiles, sit at 44.2 and 87.4 kg.
Since 17 years, the median has risen by 1.05 kg over 1 year. By 19 years it reaches 57.3 kg.
For boys at 18 years the median is 67.2 kg, 11.0 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 18 years who weighs 60.5 kg is at about the 67th percentile, meaning that out of 100 girls this age, about 67 weigh less.
Percentiles at 18 years
Download CSV (all ages)| Percentile | z-score | Metric | Imperial |
|---|---|---|---|
| 3rd | −1.88 | 44.22 kg | 97 lb 8 oz |
| 5th | −1.64 | 45.33 kg | 99 lb 15 oz |
| 10th | −1.28 | 47.21 kg | 104 lb 1 oz |
| 25th | −0.67 | 50.91 kg | 112 lb 4 oz |
| 50th (median) | 0.00 | 56.19 kg | 123 lb 14 oz |
| 75th | +0.67 | 63.39 kg | 139 lb 12 oz |
| 90th | +1.28 | 72.77 kg | 160 lb 7 oz |
| 95th | +1.64 | 80.70 kg | 177 lb 15 oz |
| 97th | +1.88 | 87.39 kg | 192 lb 11 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).