Boys
Height: 78.6 - 92.6 cm
Weight: 9.1 - 12.7 kg
The height and weight of a boy at 1 year 8 months are normally 78.6 - 92.6 cm and 9.1 - 12.7 kg
| Height | Description |
|---|---|
| Less than 75.8 cm | Below normal (extremely short) |
| 75.8 - 78.6 cm | Below normal (undersized) |
| 78.6 - 81.4 cm | Normal (below average) |
| 81.4 - 87.0 cm | Normal (average) |
| 87.0 - 89.8 cm | Normal (above average) |
| 89.8 - 92.6 cm | OK (high) |
| More than 92.6 cm | Very tall |
| The weight | Description |
|---|---|
| Less than 8.1 kg | Below normal (extremely insufficient) |
| 8.1 - 9.1 kg | Below normal (insufficient) |
| 9.1 - 10.1 kg | Normal (below average) |
| 10.1 - 12.7 kg | Normal (average) |
| 12.7 - 14.2 kg | Normal (above average) |
| 14.2 - 15.9 kg | Normal (very large) |
| More than 15.9 kg | Doesn't match age |
Girls
Height: 76.7 - 91.7 cm
Weight: 8.4 - 12.1 kg
The height and weight of a girl at 1 year 8 months are normally 76.7 - 91.7 cm and 8.4 - 12.1 kg
| Height | Description |
|---|---|
| Less than 73.7 cm | Below normal (extremely short) |
| 73.7 - 76.7 cm | Below normal (undersized) |
| 76.7 - 79.7 cm | Normal (below average) |
| 79.7 - 85.7 cm | Normal (average) |
| 85.7 - 88.7 cm | Normal (above average) |
| 88.7 - 91.7 cm | OK (high) |
| More than 91.7 cm | Very tall |
| The weight | Description |
|---|---|
| Less than 7.5 kg | Below normal (extremely insufficient) |
| 7.5 - 8.4 kg | Below normal (insufficient) |
| 8.4 - 9.4 kg | Normal (below average) |
| 9.4 - 12.1 kg | Normal (average) |
| 12.1 - 13.7 kg | Normal (above average) |
| 13.7 - 15.7 kg | Normal (very large) |
| More than 15.7 kg | Doesn't match age |
You can use the BMI calculator to get a more accurate estimate of your child's age and height.
Learn about the developmental features of a child at one and a half years
