Growth Chart Calculator
WHO and CDC references
At age 5, the CDC median weight is about 18.4 kg for boys and 17.9 kg for girls. Use the calculator below to see the weight percentile first, then compare that result with standing height and BMI for a more balanced school-entry growth read.
This embedded tool follows the same setup as the child growth chart. Weight percentile is highlighted first, while height and BMI stay visible so one number is not read in isolation.
Percentile results
Current percentile summary
Interactive charts
Visualize the current percentile position
By age 5, many children are settling into a more stable school-age pattern. A boy can still be completely healthy above or below the median if height, BMI, activity, and appetite all fit the same overall picture. The median CDC reference point is 18.4 kg (40.6 lbs), but a healthy child can still sit above or below that midpoint if the broader pattern remains steady.
A 5 year old girl can also follow a healthy curve across a broad span of percentiles. Rather than chasing one average, it is more helpful to compare weight with standing height and the direction of the curve over repeated visits. The median CDC reference point is 17.9 kg (39.5 lbs), and the trend over repeated visits still matters more than matching the exact median.
Use the unit switch to compare kilograms with pounds across the same percentile rows. The table is meant for quick reference, while the calculator above uses the exact age setup needed for a more precise read.
Boys and girls reference rows with percentile cut points.
| Percentile | Boys (kg) | Girls (kg) |
|---|---|---|
| P3 | 14.8 | 14.3 |
| P10 | 15.9 | 15.4 |
| P25 | 17.1 | 16.6 |
| P50 | 18.4 | 17.9 |
| P75 | 19.9 | 19.6 |
| P90 | 21.6 | 21.5 |
| P97 | 24.3 | 24.8 |
At age 5, weight reflects the combined effect of genetics, body frame, activity, sleep, appetite pattern, and the child’s current height velocity. Some children are naturally leaner entering school, while others carry more body mass without it meaning anything is wrong. A 5 year old weight chart is most useful when BMI-for-age and height percentile are read at the same time, because proportions matter more than the scale by itself.
A pediatric conversation is worth having if weight keeps crossing major percentile channels, BMI drifts well above or below the usual screening bands, or changes in appetite, fatigue, constipation, chronic illness, or exercise tolerance show up at the same time. This page gives growth-chart context only. If you are worried about a 5 year old being overweight, the school-age BMI pattern is usually more informative than weight alone.
Medical disclaimer
Growth chart results are educational and depend on age, sex, measurement quality, and CDC reference logic. Ask a pediatric clinician about persistent percentile shifts, feeding concerns, puberty-related changes, or any question about weight that does not fit the overall clinical picture.
These answers cover the average weight for a 5 year old, the difference between boys and girls, pounds conversions, and how weight should be interpreted at school-entry age.
At age 5, the CDC median weight for boys is about 18.4 kg, or about 40.6 lb. Many healthy boys will still sit above or below that midpoint. The more useful question is whether weight percentile fits height percentile, BMI-for-age, and the child’s longer trend across repeated visits.
Editorial Review
Content is maintained by our editorial team and reviewed against primary WHO and CDC growth references. Last reviewed site-wide on March 18, 2026.