The timing for transitioning your baby from a crib to a toddler bed varies depending on your child's development and needs. On average, many children make this transition between 18 months and 3 years old. Signs that your child might be ready include climbing out of the crib, expressing a desire for a big-kid bed, or outgrowing the crib's size. Safety should be a primary consideration when deciding on the transition, and it's essential to ensure that the toddler bed is safe for your child's age and size.