Crib to Toddler Bed: When to Switch (2026)

Age isn't one of the American Academy of Pediatrics' signals for leaving the crib; climbing and height are. This page covers those signals, then the three ways to make the move: a conversion kit for your crib, a separate toddler bed, or a bed rail on a twin.

How we chose: specs and certification claims are quoted from the listings, checked in September 2026, and we did not test the products. We searched CPSC recall records from 2019 on for each brand's toddler beds and bed rails and found no recalls of these models.

When to move out of the crib

The AAP gives three signals, and any one is enough.

The AAP's crib-buying guide puts it more simply: "Once children are about 3 feet tall, they should start sleeping in a bed." If you are worried about falls, it adds, "you may want to start with the mattress on the floor" (AAP: Choosing a Crib).

Key point: the reason is falls. The AAP says "the most common falls occur when a baby tries to climb out," which is also why it says not to use bumper pads: "toddlers can use a bumper guard to help them climb and fall out."

To check the rail, stand your child next to the crib: if the top of the rail is below their chest, it is time.

The beds, kit and rails side by side

Prices are Amazon's, as of the time shown, and subject to change. Details

What the federal toddler bed rule covers

The Consumer Product Safety Commission's toddler bed business guidance says toddler beds sold in the U.S. must meet a mandatory standard, 16 CFR part 1217, which incorporates ASTM F1821. The current version, ASTM F1821-19ɛ1, applies to toddler beds made or imported on or after January 27, 2020.

The rule defines a toddler bed as one sized for a full-size crib mattress, at least 51⅝ by 27¼ inches, and intended for a child "not less than 15 months of age and who weighs no more than 50 lbs." Its requirements cover openings, spindle and slat strength, and the mattress support.

When you shop, that means:

• A toddler bed reuses your crib mattress. All five beds here say they fit a standard full-size crib mattress, and none include one.
• Check the weight limit. Both Dream On Me listings state 50 lbs, matching the federal definition; a child who outgrows it needs a twin bed.
• Badges measure different things. GREENGUARD Gold is about chemical emissions into indoor air; JPMA and Baby Safety Alliance marks refer to testing against safety standards.

A toddler bed makes most sense when you want another year or two from the crib mattress, or when the crib stays in use for a younger sibling.

Conversion kit or a separate toddler bed

If you bought a convertible crib, its own toddler rail, sold as a conversion kit, is the obvious route, but a kit fits only the crib models it names.

The DaVinci M12599 kit makes this easy: it names four compatible cribs by model number, Charlie (M12801), Grove (M9301), Liam (M13401G) and Nathan (M12501). Find the model number on your crib's label or in its manual and match it exactly.

Pro tip: don't rely on a crib's name alone. We left out one brand-name kit because its listing title and its compatibility line named two different cribs in the same collection.

If your crib doesn't convert, or you want it for a new baby, a separate toddler bed such as the Delta Children Canton or the Dream On Me Brookside does the job; the table shows today's Amazon prices.

Bed rails, for the move to a bigger bed

The CPSC's portable bed rail guidance describes a children's bed rail as "intended to be installed on an adult bed to prevent children from falling out," for "children who can get in and out of bed unassisted (typically from 2 to 5 years of age)." These rails must meet 16 CFR part 1224, which incorporates ASTM F2085.

Both Regalo rails here say "Recommended for children ages 2-5," fit twin, full and queen beds, and are designed for a mattress with a box spring. The 43 in rail covers most of a twin bed's side; the 54 in rail covers more for a child who rolls.

Buy bed rails from a known brand and seller, and search the model on our recalls page first. In late 2025 the CPSC announced recalls of two children's bed rails sold on Amazon, HOMEAL and WYBITNY, because a child can become entrapped in the openings along the side of the mattress. Toddler beds with built-in rails, like the Storkcraft and Graco, don't need a separate one.

Making the switch

The AAP's big kid bed advice, by pediatrician and SIDS researcher Rachel Moon, covers safety and sleep.

Make the room safe for a climber:

• "While you are waiting to get a new bed, place the crib mattress on the floor."
• Clear away furniture and large toys, like rocking horses, that your child could fall against.
• The AAP says you may need a safety gate across the bedroom door so your toddler doesn't wander while you are asleep, and a gate at the top of the stairs. Our guide to baby gates by location covers top-of-stairs and doorway gates.
• Keep dressers and other furniture from tipping over, and latch or tape drawers "so they can't be pulled out and used as steps."

Keep bedtime the same:

• Keep the bedtime routine you already use.
• If your child gets out of bed, calmly lead them back. The AAP says to keep these trips "brief and boring," and to praise them in the morning for staying in bed.
• Don't reward breakouts, such as letting them climb into your bed.

Our babyproofing checklist by age has the full list for a mobile toddler, and you can search our recalls page before buying a secondhand bed or rail.

This guide summarizes public guidance from the AAP and CPSC. It is not medical advice; ask your pediatrician about your child's sleep.

Frequently Asked Questions

Is a toddler bed necessary, or can we go straight to a twin bed?

It isn't required. A toddler bed reuses the crib mattress and sits low; a twin bed works too, and the CPSC describes children's bed rails for adult-size beds as typically for ages 2 to 5.

How do I know a conversion kit fits my crib?

Match the model number on your crib's label to the kit listing. The DaVinci M12599 kit names four compatible cribs: Charlie (M12801), Grove (M9301), Liam (M13401G) and Nathan (M12501).

What if my toddler keeps climbing out of the new bed?

Lead them back calmly each time, keep it brief, and don't reward breakouts, as the AAP suggests. Make the room safe too: anchor furniture, clear things they could fall against, and consider a gate at the bedroom door and the top of the stairs.

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