Height Chart for 1-Year-Old Boys
Selected recumbent length percentiles for boys at 1 year, reported in centimeters and feet-inches from the cited official reference table.
WHO percentile table
| Percentile | Metric | Feet-inches |
|---|---|---|
| 3rd | 71.3 cm | 2 ft 4.1 in |
| 5th | 71.8 cm | 2 ft 4.3 in |
| 10th | 72.7 cm | 2 ft 4.6 in |
| 25th | 74.1 cm | 2 ft 5.2 in |
| 50th | 75.7 cm | 2 ft 5.8 in |
| 75th | 77.4 cm | 2 ft 6.5 in |
| 90th | 78.8 cm | 2 ft 7.0 in |
| 95th | 79.7 cm | 2 ft 7.4 in |
| 97th | 80.2 cm | 2 ft 7.6 in |
What these numbers imply
The figures below are not published directly by the WHO. Each one is calculated from the official length-for-age and weight-for-age tables so that this page answers questions the raw dataset leaves open. Values differ for every age and sex.
| Measure | Value | How it was derived |
|---|---|---|
| Growth over the next 3 months | +3.4 cm | The 50th percentile rises from 75.7 cm to 79.1 cm over the following 3 months. Derived from adjacent rows of the same WHO table. |
| Growth since birth | +25.8 cm | The 50th percentile at birth is 49.9 cm; at this age it is 75.7 cm. |
| Spread between 3rd and 97th percentile | 8.9 cm | At this age the middle 94% of boys fall between 71.3 cm and 80.2 cm. |
| Difference from girls at the same age | +1.7 cm | The 50th percentile for boys is 1.7 cm longer than the 50th percentile for girls. |
| Median weight and resulting BMI at this age | 9.6 kg · BMI 16.8 | Combining the 50th percentile of weight (9.6 kg) with the 50th percentile of length (75.7 cm) from the WHO weight-for-age and length-for-age tables. |
These are population reference statistics only. They describe how a group of infants of this age and sex is distributed, and say nothing about any individual child.
How to read this table
For this table, the percentile is a position in the cited reference distribution for children of the same sex and completed age band. The 50th percentile is the median: about half of the reference observations are lower and half are higher. A percentile is not a forecast, target, diagnosis, or measure of an individual child’s health. Measurement method and the reference chart used can change the reported position.
Measurement: WHO reports recumbent length for children under age 2; the page title follows the common height-chart search phrase.
Adjacent ages
Height predictor
This reference table does not embed the calculator. Open the homepage height predictor separately.
Data source
Dataset: WHO Child Growth Standards (2006): boys length-for-age, birth to 2 years. All nine displayed values come from who_boys_months.xlsx, row Month=12. See the official WHO dataset page.
Reference distribution only. This page does not provide medical advice, a diagnosis, or an individual height forecast.