Bunk beds are not considered safe for toddlers on the top bunk, and even the bottom bunk carries risks for very young children. The American Academy of Pediatrics recommends that no child younger than 6 sleep on the top bunk. Roughly 36,000 bunk bed injuries are reported each year in the United States, and half of those involve children under 6.
Why Age 6 Is the Cutoff
Children younger than 6 lack the coordination to climb a ladder safely and the body awareness to keep from rolling off an elevated surface during sleep. Toddlers move unpredictably at night, and a fall from even a few feet can cause fractures, concussions, or worse. The AAP’s recommendation isn’t a rough guideline; it reflects the developmental reality that young children simply can’t navigate the height safely, whether awake or asleep.
Bottom Bunk Risks for Toddlers
Parents sometimes assume the bottom bunk is fine for a toddler since there’s no height to fall from. The risks are different but still real. If the top bunk’s mattress support isn’t secure, it can collapse onto the child sleeping below. Some bunk beds rely on slats or a frame that may loosen over time, and an active older child jumping on the top bunk adds stress to that structure.
Entrapment is the other concern. Toddlers have smaller heads and bodies that can slip into gaps between the bed frame and the wall, or between the guardrail and the mattress. Federal safety standards require that the gap between a guardrail and the bed’s end structure not exceed 0.22 inches to prevent even finger entrapment. But if the bed is pushed against a wall with a gap, or if the mattress doesn’t fit the frame snugly, a toddler can become wedged in ways an older child wouldn’t.
Guardrails Don’t Solve Everything
Federal regulations require that guardrails on the top bunk extend at least 5 inches above the top surface of the mattress. That measurement depends on using the mattress thickness the manufacturer specifies. If you use a thicker mattress, the effective guardrail height shrinks, and a toddler can roll right over it. Even with a properly fitted mattress, 5 inches of guardrail is not much protection for a child who moves constantly during sleep, which toddlers do far more than older children.
Guardrails also need to run continuously along both sides of the top bunk with only a small opening for access. Any gap larger than 3.5 inches between the ladder and the bed frame creates an entrapment and strangulation hazard. In 2022, the CPSC recalled a line of bunk beds after a 2-year-old’s death caused by a ladder hook that detached from the frame, opening a gap wide enough for a child to become trapped.
Ladders and Stairs Both Pose Problems
Even if you’re not putting a toddler on the top bunk, having a bunk bed in the room means having a climbable structure in the room. Toddlers will climb it. Stairs are more stable than ladders and reduce the chance of slipping, but they can still be too steep for a toddler to navigate safely, and some designs have narrow treads that create tripping hazards. Ladders are worse: they can sway, shift, or detach, and a toddler’s grip strength and foot placement aren’t reliable enough for vertical climbing.
If you have a bunk bed and a toddler in the house, removing the ladder when it’s not in use helps, but it’s not a guarantee. Determined toddlers will use shelves, dressers, or the bed frame itself to climb. The safest approach is keeping bunk beds out of rooms where toddlers sleep or play unsupervised.
What to Check If You Have a Bunk Bed
If older children in your home use a bunk bed and a toddler shares the space, a few things reduce risk:
- Mattress fit: The mattress should match the manufacturer’s specifications exactly. A too-thin mattress leaves gaps along the edges where a small child can get stuck. A too-thick mattress reduces the effective guardrail height.
- Guardrail integrity: Check that guardrails are firmly attached on both sides of the top bunk, with no gaps wider than 3.5 inches anywhere along the frame, ladder connection, or end structures.
- Wall placement: Pushing the bed against a wall seems safer, but it can create a gap between the mattress and the wall where a toddler can become wedged. If the bed is against the wall, the wall-side guardrail should remain in place.
- Weight and structure: Standard bunk beds support 200 to 400 pounds per sleeping surface. More relevant for toddler safety is whether the slats or platform supporting the top mattress are intact and secure, since a collapse onto the bottom bunk is a serious hazard.
- No attachments: Remove anything tied, hooked, or draped from the bed frame. Ropes, scarves, belts, and even some decorative elements create strangulation risks. Corner posts or finials that extend above the guardrail can catch clothing.
When a Toddler Bed Makes More Sense
For children between 1 and 3, a toddler bed or a crib converted to a toddler bed sits low to the ground, has appropriate side rails, and presents none of the climbing, falling, or entrapment risks that come with bunk beds. The transition from a toddler bed to a regular twin bed typically happens around age 3, and the move to a top bunk should wait until at least age 6.
If space is the reason you’re considering a bunk bed for a toddler, a trundle bed (a low pull-out bed stored beneath a regular bed) gives you two sleeping surfaces without the height risk. The toddler sleeps just inches off the floor, and there’s no ladder to climb.