Many people go back and forth on whether to outfit a room with a twin vs a full size mattress. There are several things to consider. Here’s what I would say are general reasons why a twin or a full size mattress would be best. If you want to review specific measurements for the twin and full size mattresses, visit our Mattress Sizes page.
Twin Size is Best
Usually you’re trying to fit more beds into a room to accommodate more people or specifically children. Going with twin size mattresses will help save space. If you do have the luxury of space, then having a full size mattress on the bottom bunk is a good option.
If you want to spoil your child get a full size mattress but a twin is best suited for a child or teenager.
Cost or Budget
If you’re buying on limited budget then a twin size mattress will help you save money. Find an inexpensive twin bed on sale. However, with a little creativity you can often afford a full size if that’s what you want to do. Buy a base model full size mattress and get an inexpensive foam topper. That’ll often beat out a twin size mattress’ price.
Full Size is Best
I don’t usually recommend a full size for a guest bedroom. Queens are more typical, but when you’re deciding between a twin and a full then go with full. Your guest will thank you. Either bed is not any taller but the extra room side-to-side is beneficial, especially for an adult.
Going along the same lines, a full size mattress is better for an adult than a twin size mattress. You’ll appreciate the ability to roll to either side without feeling like you’re sleeping in a sleeping bag.
Neither is Best
If you’re a couple and want to share a full size mattress, I strongly recommend upgrading to a queen. You may be the type that likes to snuggle but often you’ll find you’re losing more sleep because you don’t have room to spread out and relax.
If the mattress is for a taller person, consider getting a twin or full XL (Extra Long) mattress. These are the same measurement head to toe as a queen or king mattress. You’ll be less likely to have your feet hanging off the end.