When to Move Your Baby From Bassinet to Crib (and How to Do It Gently)

Move your baby from the bassinet to the crib when any one of three things happens: they reach the bassinet’s weight or length limit, they start trying to roll or push up on their hands and knees, or they simply don’t fit anymore. For most babies that is somewhere between three and six months. The crib does not have to mean their own room — the American Academy of Pediatrics recommends that babies sleep on their own surface in the parents’ room, ideally for at least the first six months, and a crib beside your bed meets that. Moving rooms is a separate decision, and this guide covers both.

The three signals it is time

1. The label says so. Every bassinet has a weight limit, often somewhere around 15 to 20 pounds, and many have a length or an age limit as well. Find the sticker or the manual. When your baby crosses it, that is the date.
2. Rolling, or trying to. A bassinet’s shallow sides are designed for a baby who stays put. At the first attempts to roll (some babies at two months, most at three to four) or to push up onto hands and knees, the bassinet is done. The trigger is attempting, not succeeding.
3. They look cramped. Head near one end, feet near the other, arms hitting the sides when they startle: time.

Two safety notes on the bassinet itself. Bassinets and cradles sold in the US must meet the federal safety standard (the CPSC updated its rule in early 2026). If yours is a hand-me-down, check for recalls — recalls do not remove products from grandparents’ houses. And inclined sleepers, loungers and “nests” are not bassinets: anything with a sleep surface tilted more than 10 degrees has been unlawful to sell since late 2022, and sitting devices are not for sleep.

Bassinet-to-crib is not the same decision as room-to-room

You can move your baby into a full-size crib in your own room. Room-sharing without bed-sharing is associated with roughly halving the risk of sleep-related infant death, and the AAP recommends it ideally for at least the first six months.

What about after six months? One analysis of 279 families found that babies sleeping in their own room at nine months had longer unbroken stretches of sleep — about 100 minutes longer — than babies still room-sharing. That is an observational finding (families were not assigned to rooms, and babies who sleep worse may be kept closer), so it does not override the safety guidance. The same study found something that matters more: room-sharing families were more likely to end up with blankets and pillows in the baby’s space and to drift into bed-sharing overnight. If you keep your baby in your room past six months, the lesson is to keep their surface as clear and separate as it was on day one.

After six months the AAP’s guidance is a recommendation for at least that long, not a rule against moving later — which leaves the room decision to your family’s circumstances.

Setting up the crib safely

The crib standard is the same as the bassinet standard, and it is short:

• A firm, flat mattress that fits the frame with no gaps, covered by a fitted sheet and nothing else.
• No bumpers (padded crib bumpers have been banned from sale since 2022), no pillows, blankets, positioners, wedges or stuffed animals.
• A wearable sleep sack instead of a blanket; no weighted sleep sacks or swaddles at any age.
• Stop swaddling at the first sign of rolling attempts — which is usually the same moment the bassinet becomes too small.
• Baby on their back for every sleep, feet toward the foot of the crib, no hat indoors, and no more than one layer more than you would wear to be comfortable in that room. (The AAP publishes no nursery temperature number; check the chest or the back of the neck, not the hands.)
• Cords, blind pulls and monitor cables out of reach. A sound machine, if you use one, across the room at low volume — never on the rail.

Our safe sleep checklist has the full list.

How to make the move gently

There is no research on the best way to switch sleep surfaces, so what follows is the approach that tends to go smoothly, labeled as such.

1. Start with naps. Two or three days of naps in the crib before the first night lets your baby meet the new space while everyone is awake and patient.
2. Change nothing else. Same bedtime routine, same sleep sack, same sound, same lighting. The crib is the only new variable.
3. Spend awake time there. A few minutes of play in the crib during the day, with you right there, makes it a familiar place rather than the thing that happens when you leave.
4. If the crib is in a new room, stage it. Naps in the new room first; then the first part of the night with you nearby if you like; then the full night. A few off nights are normal and are not evidence the move was wrong.
5. Be extra careful about the set-up in the first week. A new sleep location is itself a risk factor — in one study, babies who died on sofas were six times more likely to have been in a new sleep place. The crib is a safe place; just make sure it is set up like one before the first nap.

Common worries

“They sleep so much better in the bassinet.” Often the bassinet is snug, and the snugness is doing some of the work. That is fine until the baby can roll — and then it isn’t, which is the whole point of the limit.

“The crib looks huge for them.” It does. Babies do not need a small space to sleep; they need a safe one.

“Can I just put the bassinet mattress in the crib?” No — a mattress that doesn’t fit the frame leaves gaps, and gaps are the hazard.

Questions parents ask

Can a baby sleep in a crib from birth?

Yes. A crib that meets the safety standard, in your room, is a perfectly good first bed. A bassinet is a convenience, not a requirement.

What if my baby hates the crib?

Most babies object to any change for a few days and then stop. Keep everything else identical, start with naps, and give it a week before you conclude anything.

When should my baby move to their own room?

Not before six months is the guidance; after that it is a family decision. Keep the sleep space clear and separate however long you share a room.

Do I need a mini crib in between the bassinet and the crib?

No. If the bassinet is done, a full-size crib is the simplest next step and will last until the toddler years.