Baby gear by week: what you actually need, and when
The first year runs on consumables and a short list of real gear. This hub matches both to the week you're in — no registry panic, no buying a high chair in week 3.
How we pick
Fit and safety over features, every time. We'd rather tell you a $20 item does the job than dress up a $200 one. Nothing on this page is sponsored, and v1 carries no shopping links at all — when buying guides link out in a future version, they'll be labeled as affiliate links.
Tool: car seat three-across fit checker
Three kids, one back seat? Add up the widths of the seats you're considering and compare them with your car's rear hip room before you buy anything. Open the fit checker →
The consumable that runs the year: diapers
Diaper counts below are typical published ranges for healthy, full-term babies — they are not part of the First52 week dataset, and your baby's count will wander around them. Steady wet diapers matter more than any total.
| Stage | Changes | Per week | Typical size |
|---|---|---|---|
| Weeks 1–6 | 10–12 a day | 70–84 | Newborn, then size 1 |
| Weeks 7–12 | 8–10 a day | 56–70 | Size 1–2 |
| Months 4–6 | About 8 a day | About 56 | Size 2–3 |
| Months 7–9 | 6–8 a day | 42–56 | Size 3–4 |
| Months 10–12 | About 6 a day | About 42 | Size 4 |
Wipes track diaper changes almost one-for-one (plus a chaos margin) — roughly one standard pack per 60–80 changes. If you formula-feed, bottles per day track the milk feed counts in each band below; follow your pediatrician's and the manufacturer's preparation guidance, and when in doubt, ask at the next visit.
Weeks 1–6
Milk feeds this band: about 8–12 a day (from the First52 week data).
- Swaddles (3–4). The only sleep gear that matters yet — arms-down swaddling until baby shows signs of rolling.
- Bottles (4–6 if bottle-feeding). Feeds run 8–12 a day at this age, so a small rotation plus one spare beats a big set.
- A safe sleep surface. Bassinet or crib with a firm, flat mattress and nothing else in it.
- Car seat. An infant carrier or convertible, installed before you need it. Three kids across? Run the fit checker first.
Weeks 7–12
Milk feeds this band: about 7–10 a day (from the First52 week data).
- Sleep sacks (2). The swaddle graduates as rolling approaches; a wearable blanket keeps sleep safe and warm.
- Tummy-time mat or gym. Awake floor time is the main 'activity' purchase of this band — padding and contrast patterns earn their keep.
- A carrier or wrap. For the naps that only happen on a person, and for getting through a store with both hands.
Months 4–6
Milk feeds this band: about 5–8 a day (from the First52 week data).
- High chair. Solids typically start in this window — a wipeable chair with a footrest is the whole brief.
- First-foods basics. A couple of soft spoons, 2–3 bibs with sleeves or catch pockets, and an open or straw cup to practice with.
- Teethers (2–3). Teething often starts here; simple one-piece teethers are easiest to keep clean.
Months 7–9
Milk feeds this band: about 4–6 a day (from the First52 week data).
- A second car seat (or the plan for one). The infant carrier gets heavy and outgrown; many families move to a convertible in this band.
- Outlet covers & basic gates. Crawling changes the safety shopping list — start where baby actually roams.
- Straw cups & snack containers. Self-feeding practice is messy and constant; cheap and plentiful wins.
Months 10–12
Milk feeds this band: about 3–5 a day (from the First52 week data).
- Push walker or ride-on. Cruising turns into first steps; a stable push toy beats a seated walker (which safety guidance discourages).
- Shoes for first steps. Soft, flexible soles for new walkers — mostly for outdoor surfaces.
- Board books in bulk. The highest-use 'toy' purchase of the year — chewing included at no extra charge.
Educational information only — not medical advice. Every baby develops and sleeps on their own timeline. If you have any concern about your baby's sleep, feeding, or development, talk to your pediatrician.