Full vs. Twin Beds: What’s the Difference?

While Twin and Full beds share many similarities, such as being narrower and more affordable than the popular Queen size, they each have unique characteristics that may make one a better fit for your bedroom than the other. Both mattress sizes are commonly found in children’s rooms and college dormitories, but they come with different pros and cons. Keep reading to find out which one might be the best fit for you.

Twin vs Full Mattress Comparison

Here’s a quick summary of the differences between a Twin-size mattress and a Full-size mattress, with the comparison chart below:

Twin-Size Mattress

The Twin-size mattress, also known as a Single bed, is typically the next step for children who have outgrown their cribs. It’s also a great fit for smaller bedrooms and works well in guest rooms. Bunk beds are traditionally designed with Twin beds.

Dimensions

• Width: 38″
• Length: 75″

Pros

• More affordable compared to a Full-size mattress.
• Great for children who are transitioning from a crib.
• Easy to find accessories like sheets, comforters, and mattress protectors.
• Fits comfortably in smaller bedrooms.
• Ideal for traditional bunk beds.

Cons

• Too small for couples to share.
• Too short for taller sleepers.
• Some may prefer a larger bed for more space.

Additional Twin-Size Mattress Sizes

• Twin XL:
  The Twin XL is the same width as the Standard Twin but is 5″ longer (making it the same length as a Queen or King). This is a great option for college dormitories or taller children who need extra length. You’ll also see Twin XL mattresses in hostels where multiple beds are placed in one room.

Dimensions

• Width: 38″
• Length: 80″

Full-Size Mattress

The Full-size mattress, also known as a Double bed, offers more width than a Twin mattress, but it’s the same length as a Twin mattress (75″). The Full-size bed is often better suited for individuals, as a couple would only get 27″ of space each. This makes it a better option for growing children, teens, or single adults.

Dimensions

• Width: 54″
• Length: 75″
• Width per Person: 26.5″

Pros

• More spacious than a Twin-size mattress.
• Easy to find accessories like sheets, blankets, and mattress pads.
• A great option for guest rooms and growing children/teens.

Cons

• More expensive than a Twin-size mattress.
• Too small for most couples (though some may manage to share it).
• Too short for taller individuals.

Additional Full-Size Mattress Sizes

• Full XL:
  The Full XL is the same width as a standard Full, but it has an extra 5″ of length, making it the same length as Twin XL, Queen, or King mattresses.

Dimensions

• Width: 54″
• Length: 80″
• Width per Person: 26.5″

Should You Get a Twin or Full Bed?

Choose a Twin if…

• You’re a petite adult or child – As mentioned earlier, a Twin-size bed is the next step up for children transitioning from cribs. With dimensions of 38″ x 75″, it’s perfect for kids or toddlers but too small for adults or couples. You can find more options for kids on our best mattresses for children page.
• You’re trying to save money – A Twin-size bed is much more affordable compared to a Full-size bed. If you don’t need the extra width, a Twin mattress will save you money on the frame, mattress, sheets, and accessories. Plus, Twin XL beds are often available at great prices during the Back-To-School sales.
• You need a bed for a smaller room – The Twin-size mattress works best in smaller rooms, like a nursery or children's room. If you're replacing a crib, a Twin mattress will fit perfectly and save on space. Twin beds can also fit easily in shared spaces like kids' rooms.

Choose a Full if…

• You’re a couple and tight on space – While two people can technically sleep on a Full-size bed, it will be quite tight with only 27″ of width per person. If your room allows for it, you might also consider the Full XL for extra length.
• You’ve got a bigger room to fill – A Full-size bed gives you 15″ more width than a Twin or Twin XL, which helps fill a room better. If you're upgrading from a Twin, this extra space provides more comfort without taking up too much room.
• You want something that will grow with you – More families are choosing to skip the Twin and go straight to a Full for their teenagers or even young children. The extra width provides plenty of space for growing kids or teens and allows them to use the bed for a longer time.

Things To Consider

Before choosing between a Twin/Twin XL or a Full/Full XL, there are several key factors to think about:

• Measure your space and leave room for movement – It’s important to ensure your chosen mattress fits comfortably into your room. Designers typically recommend 30 inches of space around your bed for easy movement. So, measure your room carefully before making your choice.
• Consider who will be sleeping in the bed – Is the bed for a child or a guest room? Will two people be using the bed? If two people will be sharing the bed, you may want to opt for a Full (or Full XL) to provide enough space.
• Shop seasonally if you can – Mattresses often go on sale during certain times of the year. If you’re on a budget and thinking about upgrading to a Full-size mattress, consider waiting for seasonal sales like Labor Day, Presidents' Day, Memorial Day, or Back-To-School sales.

Overall

The decision between a Twin and a Full mattress primarily depends on your space and budget. For a smaller child’s room, college dorm, or guest room, a Twin or Twin XL is a great option. However, if you’re looking for more width or need a bed for a couple, a Full-size bed (or Full XL) is a better choice due to the additional space it provides.