Normal weight for 17 year olds (kg)
Boys, median
Girls, median
Most healthy 17-year-olds weigh 44 to 89 kg. On average, boys weigh a little more than girls at this age.
Boys: usual range is 50.8 to 88.8 kg (5th to 95th percentile)
Girls: usual range is 44.4 to 79.5 kg (5th to 95th percentile)
Weight percentiles at 17 years
These numbers come from CDC growth charts. For children under 2, we use World Health Organization growth charts.
| Percentile | Boys | Girls |
|---|---|---|
| 3rd | 49.3 kg | 43.3 kg |
| 5th | 50.8 kg | 44.4 kg |
| 10th | 53.3 kg | 46.3 kg |
| 25th | 58.2 kg | 50.0 kg |
| 50th | 64.7 kg | 55.2 kg |
| 75th | 72.8 kg | 62.3 kg |
| 90th | 82.1 kg | 71.6 kg |
| 95th | 88.8 kg | 79.5 kg |
| 97th | 93.8 kg | 86.2 kg |
Growth chart
How weight changes with age for boys and girls, by year.
The wider shaded area shows the 5th to 95th percentile. The narrower area shows the 25th to 75th. The lines show the median for boys and for girls. See the table
- Boys, median
- Girls, median
- Boys, 5th to 95th percentile
- Boys, 25th to 75th percentile
- Girls, 5th to 95th percentile
- Girls, 25th to 75th percentile
What it means
In kilograms, the usual range for a 17-year-old is 50.8 to 88.8 kg for boys and 44.4 to 79.5 kg for girls (5th to 95th percentile).
For a 17-year-old, the median for boys is 9.5 kg more than for girls (64.7 vs 55.2 kg).
Two growth charts. For children under 2, we use World Health Organization growth charts. From age 2, we use CDC growth charts. US doctors follow the same switch.
What's a usual range? Most healthy children are between the 5th and 95th percentiles. Many healthy children are above or below that range. Doctors look at the trend over time, not one weight.
Percentiles aren't grades. The 50th percentile is the middle: half of children weigh more and half weigh less. It isn't a target weight.
How to measure your child
- Weigh your child in light clothing, without shoes.
- Write down the weight to one decimal place, in pounds or kilograms.
- Use the same scale at the same time of day when you compare.
Nearby ages
Common questions
Short answers about how these calculators work.
Why do some ages use WHO charts and others CDC charts? In the US, doctors use World Health Organization growth charts from birth to 2 years and CDC growth charts from age 2. We follow the same switch.
Is a child above the 95th percentile unhealthy? Not from one number. A percentile shows where a child falls compared with others the same age. Your child's doctor looks at it along with height, growth over time and a checkup.
Sources
Where these numbers come from
- 2000 CDC growth charts for the United States (opens in a new tab) - CDC, 2000Growth charts for children 2 and older
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