Weight for boys at 20 years
At 20 years, the median weight for boys on the CDC 2000 growth charts is 70.6 kg (155 lb 10 oz): half of boys this age weigh less and half more. The middle half of boys, from the 25th to the 75th percentile, falls between 63.6 and 79.2 kg, a spread of 15.5 kg. The outer lines of the chart, the 3rd and 97th percentiles, sit at 54.0 and 100.8 kg.
Since 19 years, the median has risen by 1.47 kg over 1 year.
For girls at 20 years the median is 58.2 kg, 12.4 kg less than for boys, 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 boy at 20 years who weighs 75.7 kg is at about the 66th percentile, meaning that out of 100 boys this age, about 66 weigh less.
Percentiles at 20 years
Download CSV (all ages)| Percentile | z-score | Metric | Imperial |
|---|---|---|---|
| 3rd | −1.88 | 54.00 kg | 119 lb 1 oz |
| 5th | −1.64 | 55.66 kg | 122 lb 11 oz |
| 10th | −1.28 | 58.41 kg | 128 lb 12 oz |
| 25th | −0.67 | 63.64 kg | 140 lb 5 oz |
| 50th (median) | 0.00 | 70.60 kg | 155 lb 10 oz |
| 75th | +0.67 | 79.18 kg | 174 lb 9 oz |
| 90th | +1.28 | 88.81 kg | 195 lb 13 oz |
| 95th | +1.64 | 95.71 kg | 211 lb 0 oz |
| 97th | +1.88 | 100.78 kg | 222 lb 3 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).