Height Chart for 5-Week-Old Boys
At 5 weeks, the WHO median length for boys is 55.3 cm (1 ft 9.8 in), with the 3rd percentile at 51.7 cm and the 97th at 59.0 cm.
| Percentile | Metric | Feet-inches |
|---|---|---|
| 3rd | 51.7 cm | 1 ft 8.4 in |
| 5th | 52.1 cm | 1 ft 8.5 in |
| 10th | 52.8 cm | 1 ft 8.8 in |
| 25th | 54.0 cm | 1 ft 9.3 in |
| 50th | 55.3 cm | 1 ft 9.8 in |
| 75th | 56.7 cm | 1 ft 10.3 in |
| 90th | 57.8 cm | 1 ft 10.8 in |
| 95th | 58.6 cm | 1 ft 11.1 in |
| 97th | 59.0 cm | 1 ft 11.2 in |
Check a length against this row
Accepts 47.5 to 63.2 cm.
Week-by-week change in the median
The median has gained 5.4 cm since birth (49.9 cm), about 1.1 cm a week. The weekly table shows 0.9 cm between weeks 4 and 5 and 0.9 cm between weeks 5 and 6. By week 13 the median reaches 61.4 cm, another 6.1 cm.
The largest single-week change in the table, 1.2 cm, comes between birth and week 1 and again between weeks 1 and 2; between weeks 12 and 13 it is 0.6 cm.
| Age | 3rd | 50th | 97th | Change |
|---|---|---|---|---|
| birth | 46.3 | 49.9 | 53.4 | |
| 3 weeks | 49.8 | 53.4 | 57.0 | +3.5 |
| 4 weeks | 50.7 | 54.4 | 58.0 | +1.0 |
| 5 weeks | 51.7 | 55.3 | 59.0 | +0.9 |
| 6 weeks | 52.5 | 56.2 | 59.9 | +0.9 |
| 7 weeks | 53.4 | 57.1 | 60.8 | +0.9 |
| 13 weeks | 57.6 | 61.4 | 65.2 | +4.3 |
Spread at 5 weeks
The 3rd-to-97th range is 7.3 cm, close to the 7.1 cm at birth; across the first 13 weeks it never moves by more than 0.6 cm.
A boy at the 3rd percentile (51.7 cm) is about as long as the median boy at 2 weeks (52.3 cm); one at the 97th (59.0 cm) is about as long as the median boy at 9 weeks (58.7 cm).
Boys and girls at 5 weeks
The girls' median at 5 weeks is 54.2 cm, 1.1 cm shorter.
When to ask a doctor
This page places one length on a reference; it says nothing about how a baby is doing overall. If you are concerned about a newborn's growth, speak to a pediatrician or family doctor.
Reference values only, not medical advice. How these tables are built.