24-Month-Old (2 Years): Average Weight and Height
The WHO median weight at 24 months is 12.2 kg (26.8 lb) for boys and 11.5 kg (25.3 lb) for girls, with the full 3rd to 97th percentile range below for both weight and length, in metric and US units.
Weight percentiles at 24 months
| Percentile | Boys | Girls |
|---|---|---|
| 3rd | 9.8 kg (21.6 lb) | 9.2 kg (20.2 lb) |
| 15th | 10.8 kg (23.8 lb) | 10.1 kg (22.3 lb) |
| 50th (median) | 12.2 kg (26.8 lb) | 11.5 kg (25.3 lb) |
| 85th | 13.7 kg (30.2 lb) | 13.1 kg (28.8 lb) |
| 97th | 15.1 kg (33.2 lb) | 14.6 kg (32.2 lb) |
Length percentiles at 24 months
| Percentile | Boys | Girls |
|---|---|---|
| 3rd | 82.1 cm (32.3 in) | 80.3 cm (31.6 in) |
| 15th | 84.6 cm (33.3 in) | 83.1 cm (32.7 in) |
| 50th (median) | 87.8 cm (34.6 in) | 86.4 cm (34.0 in) |
| 85th | 91.0 cm (35.8 in) | 89.8 cm (35.3 in) |
| 97th | 93.6 cm (36.8 in) | 92.5 cm (36.4 in) |
Head circumference percentiles at 24 months
| Percentile | Boys | Girls |
|---|---|---|
| 3rd | 45.7 cm (18.0 in) | 44.6 cm (17.5 in) |
| 15th | 46.8 cm (18.4 in) | 45.7 cm (18.0 in) |
| 50th (median) | 48.3 cm (19.0 in) | 47.2 cm (18.6 in) |
| 85th | 49.7 cm (19.6 in) | 48.6 cm (19.1 in) |
| 97th | 50.8 cm (20.0 in) | 49.8 cm (19.6 in) |
What these numbers mean
The row people usually want is the 50th percentile, and it is worth being precise about what it is. It is the median, not the average: half of healthy children of this age and sex measure less and half measure more. The two are close for measurements like these and they are not the same thing, and median is what the WHO publishes.
The 3rd and 97th rows mark the band clinicians generally treat as typical. A child sitting on the 10th percentile since birth and staying there is following their own curve, which is what actually matters; crossing several bands in a short time is the thing worth raising at a checkup.
Length rather than height, because under two the measurement is taken lying down. Standing height measures slightly shorter, which is one reason a number from home and a number from the clinic can differ without either being wrong.
To place your own child's measurement rather than read the reference, our percentile calculator returns the percentile for a specific weight or length, and the full growth charts show these figures as curves across the whole first two years.
Frequently asked questions
What is the average weight for a 24-month-old?
On the WHO growth standards the median is 12.2 kg (26.8 lb) for boys and 11.5 kg (25.3 lb) for girls. Median means half of healthy children weigh less and half weigh more, so it is a middle rather than a target, and the typical range runs from the 3rd to the 97th percentile in the table above.
What is the average height for a 24-month-old?
The median length is 87.8 cm (34.6 in) for boys and 86.4 cm (34.0 in) for girls. Under two, length is measured lying down rather than standing, which is why these tables say length rather than height.
Is my 24-month-old underweight or overweight?
A single measurement rarely answers that, and this page cannot. Roughly the 3rd to the 97th percentile is the band usually treated as typical, but what a paediatrician watches is whether a child keeps following their own line across visits. Bring the question to a checkup rather than to a table.
Why do boys and girls have different numbers?
Because the WHO publishes separate standards for each, at every age. Using the wrong one shifts the answer, which is why both are shown side by side here.
Your child's own curve, not just this row
Growbaby's growth journal keeps every measurement in one place and plots your child's own line against these percentiles over time, alongside milestones, sleep and feeding.
This tool is for general informational purposes only. It is not a medical device and does not provide medical advice, diagnosis or treatment. For any question about your or your baby's health, always consult a qualified healthcare provider.