Sometime around 2 or 2 1/2, most children are ready to make the switch from crib to bed. The tip-off that the time is ripe? When your child is 35 inches in height or is able to stand up and climb out of his crib with the mattress at the lowest setting. If your child has adjusted well to his bedtime routine and is able to put himself back to sleep when he wakes at night, he'll feel confident about moving up to a big bed.
It's best not to let this momentous change coincide with the arrival of a new sibling because the older child may feel displaced. If you're expecting, move your child to his new bed early in the pregnancy so he has time to adjust, or wait until a few months after the baby has arrived and your child has accepted his new sibling.
If your child's room is upstairs, make sure a sturdy gate is in place at the top of the stairs to prevent falls during the night wandering that may occur initially. Most experts advise against the use of bunk beds at this age for safety reasons. Wait until your child is at least 6 before allowing him to sleep on the top of a bunk bed.
All content here, including advice from doctors and other health professionals, should be considered as opinion only. Always seek the direct advice of your own doctor in connection with any questions or issues you may have regarding your own health or the health of others.