Running, climbing and lots of "why?" looks are typical now.
These are things most children (about 3 in 4) can do by this age. Babies born early may reach them later — use their corrected age.
| Weight (3rd–97th) | Length (3rd–97th) | Head (median) | |
|---|---|---|---|
| Boys | 9.3–14.3 kg (median 11.5) | 79.7–90.5 cm (median 85.1) | 47.8 cm |
| Girls | 8.7–13.8 kg (median 10.9) | 77.9–89.4 cm (median 83.7) | 46.7 cm |
Any steady curve within this range is normal; what matters is that your baby follows their own curve over time.
No routine vaccine is scheduled this month on the IAP or UIP schedules. Check that earlier doses are complete.
Most 21-month-olds: runs more steadily; uses 20–50 words; sorts shapes and colours with help; plays alongside other children.
The WHO median is 11.5 kg for boys and 10.9 kg for girls; the normal range is wide (see the table).
11–14 h in 24 hours including 1 nap.