Baby timeline
Your baby at 18 months
A confident walker with a growing vocabulary. The 18-month immunisations and the 18-month Maternal & Child Health visit both fall around now — the last scheduled visits before age two.
What you might notice
18 months
- Walks well, may run and climb
- Uses several single words, and understands many more
- Points to show you things
- Scribbles, stacks a couple of blocks
- Feeds themselves with fingers and tries a spoon
Specialist note: Consider paediatric input if: not walking, no words, loss of previously gained skills, or not pointing/sharing attention.
Typical weights at this age
| Typically around | Most are between | |
|---|---|---|
| Girls | 10.2 kg | 8.2–13 kg |
| Boys | 10.9 kg | 8.9–13.5 kg |
Ranges are the WHO Child Growth Standards typical range (3rd–97th centile) at this age. Babies born early are tracked by corrected age. Weights vary — your MCH nurse tracks your baby’s own curve, which matters more than any single number.
Trusted resources
Your baby’s own timeline
Enter a birth date on the timeline tool to see milestones tuned to your baby — including corrected age for babies born early — and take the whole first 18 months with you as calendar reminders.
Open the baby timelineGeneral information only, aligned with Raising Children Network and green book developmental guidance. Babies vary, and corrected age applies for babies born early.
Concerns about your baby? Start with your MCH nurse (MCH Line 13 22 29) or your GP. For 24-hour nurse advice: NURSE-ON-CALL 1300 60 60 24.
Babies this age grab and mouth everything. Suspected poisoning: Poisons Information 13 11 26. Choking with inability to cry or breathe, collapse, or turning blue: call 000.
In an emergency call 000. Last reviewed 2026-08-25.