Kids’ beds come in a variety of shapes and sizes. Of course, there are simple beds with four posts, a headboard, and a mattress. For many kids, that’s all you need. However, if you're looking for extra storage or want to sleep multiple kids in one room, there are plenty of options.

Some beds have a built-in bookcase or under-bed drawers — or both — for additional storage. This can be great for keeping track of stuffed animals or storing clothes in a small room. Loft beds can also add storage or save space by leaving room for a desk, shelves, or a dresser underneath.

Kids’ bunk beds are a fantastic option if you need to sleep multiple children in one room. This leaves more floor space for desks, toys, or just moving around the room. There are even triple bunks and corner quadruple bunks that sleep three or four children. Just make sure the ceiling is high enough before you buy.

Trundle beds, with a second mattress that pulls out from underneath offer convenient extra space for sleepovers. 

However, kids’ bed sizes typically correlate to the child's size. For smaller children, toddler beds are the size of a standard crib mattress, so you can easily transition from a crib or bassinet to a regular bed. Some cribs even convert to a toddler bed. A twin bed, on the other hand, is about the same length as a queen or king but narrower, generally only 38 inches wide.

For some children, transitioning to a toddler bed first makes the change easier, while others are ready for a twin as soon as they outgrow their crib. Twin-size beds are also good because you don’t have to buy another bed as soon. Small children outgrow toddler beds quickly, meaning you’ll have to invest in another bed within a year or two, while a twin bed can last well into their teens.