25 August 2026 · Veronica Chi
Business & Product Director · Mum of two
Marking Milestones in Your Baby's First Year
Milestone charts are useful and quietly stressful in equal measure. They are built from population averages, which means roughly half of all perfectly typical babies will be behind the number on any given line. What follows is the typical range rather than the average, which is the more honest way to read development — plus the signals that genuinely warrant a conversation, and the milestones nobody puts on a chart.
The first year, by quarter
| Around | Movement | Communication | Social |
|---|---|---|---|
| 0–3 months | Lifts head during tummy time, unfolds from newborn curl | Coos, different cries | First social smile, 6–8 weeks |
| 4–6 months | Rolls one way then both, sits with support | Babbles, laughs, turns to voices | Recognises familiar faces, reaches to be held |
| 7–9 months | Sits unsupported, may crawl or shuffle | Babble strings — bababa, dadada | Separation awareness begins, plays peekaboo |
| 10–12 months | Pulls to stand, cruises, may take steps | First words, points at things | Waves, offers objects, follows your gaze |
Two caveats do most of the work here. Babies born early should be tracked by corrected age — from the due date rather than the birth date — for at least the first two years. And development is not a queue: a baby pouring everything into learning to walk often pauses on words for a month, and vice versa.
Why the ranges are so wide
- Independent walking is normal anywhere from about nine months to eighteen. Both ends are ordinary.
- Some babies never crawl. Bottom-shuffling, commando crawling and going straight to walking are all within normal.
- First words land anywhere from about ten months to fifteen, and comprehension runs well ahead of speech at every stage.
- Teeth arrive between about four months and twelve, and the timing predicts nothing about anything else.
- How much a baby is put down matters. Floor time builds the strength that the chart is measuring.
The signs worth raising
Being late to one thing is rarely meaningful on its own. What is worth a conversation with a doctor or health visitor is a pattern, a loss, or an asymmetry.
- Losing a skill they previously had — words, babble, waving, or movement.
- No social smile by around three months.
- Not responding to sound, or not turning towards a voice.
- Using one side of the body noticeably more than the other, or a strong hand preference before twelve months.
- Not sitting with support by around nine months, or not bearing weight on the legs.
- No babbling, pointing or gestures by around twelve months.
- Persistent stiffness or persistent floppiness.
Raising a concern early costs a short appointment. Where something is going on, early support is consistently more effective than later support, and the great majority of these conversations end in reassurance.
The milestones nobody charts
The official list is a clinical instrument, not a record of the year. The things parents remember are mostly not on it.
- The first time they recognise you across a room and their whole body reacts.
- The first proper belly laugh, usually at something inexplicable.
- The first night you both sleep and you wake up worried rather than tired.
- The day they start handing you things — an early act of deliberate sharing.
- The first time they comfort themselves with a familiar blanket or toy.
- The moment they realise a dropped spoon can be dropped again.
How to keep a record without it becoming a project
- One line a week in a note on your phone beats an album you will not fill in.
- Photograph the ordinary — the high chair, the pram, the corner of the room — not just the occasions. The background is what you will want later.
- Take one photo a month in the same place with the same blanket. The size change does the work without any styling.
- Record the sounds. Everyone photographs and almost nobody records, and the babble is the thing that disappears most completely.
- Keep one object rather than everything: the first muslin, the first shoes.
And resist the comparison. The baby walking at nine months and the baby walking at sixteen are, at four, indistinguishable on a playground.
Questions parents ask
When should a baby walk?
Independent walking is normal anywhere from about nine to eighteen months. Both ends of that are typical, and walking late does not predict anything about later coordination or ability. Babies born early should be assessed by corrected age.
Is it a problem if my baby never crawls?
Usually not. Bottom-shuffling, commando crawling and going straight from sitting to pulling up are all within the normal range. What matters more is that the baby is moving themselves around somehow and using both sides of the body evenly.
What developmental signs should I raise with a doctor?
Losing a skill they previously had, no social smile by around three months, no response to sound, a strong preference for one side of the body, not sitting with support by nine months, or no babbling, pointing or gestures by twelve months.
Should I use corrected age for a premature baby?
Yes — track milestones from the due date rather than the birth date, generally for the first two years. A baby born two months early is developmentally two months younger than the calendar suggests.
Sources
This guide is general information, written to help you understand a topic and ask better questions — it is not medical advice and does not replace your own doctor, midwife or paediatrician. Anything that worries you about your baby belongs with them.