Can a 15 month old sleep in a toddler bed?
Short answer: Usually it is early. Most children stay in a cot until they climb out or reach about 18 months to 3 years. A cot bed lets you convert when ready.
Babies change fast, so the answer depends on your child's age, weight and development, and on your product's instructions.
What the guidance says
- Use a firm, flat, waterproof mattress in good condition, with no raised or cushioned edges, that fits the cot or Moses basket with no gaps.
Shop at Baby Kingdom
- Hoppekids Shorty Daybed
- Flair Aris Single Montessori Bed with 2 Storage Drawers
- Flair Imogen Montessori Toddler Floor Bed with Safety Fence Lilac
- Kidsaw JCB 4CX Single Digger Bed with Scoop Toy Box Yellow
Check each product page for its exact dimensions, mattress size, age and weight limits and safety standards.
More advice
Can a 2 year old sleep in a cot bed?Can a 2 week old have a pillow?Can a 9 month old have a pillow?What mattress does a toddler bed need?Is a toddler bed right for you? Quick quizFrom cot to toddler bed: a step-by-step moveAll toddler beds and big-bed moves advice →
Sources
- The Lullaby Trust: Baby mattresses and bedding (accessed 2026-10-21)
General information only, not medical advice. Always follow your product's instructions. If you are worried about your baby, contact your GP, health visitor or 111. In an emergency, call 999.