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Twin

38 x 75 in

An overview of common Twin mattress sizes and dimensions

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At a Glance

Dimensions

38 x 75 in

Comfortably Sleeps
1
Total Sleep Area
20
ft²
Space Per Sleeper
38
in

In Detail

What are the dimensions of a Twin size bed?

Twin mattress dimensions are 38 inches by 75 inches — the smallest mattress you can buy besides toddler beds. Due to its small size, a twin bed is often purchased for children and young teenagers. Small adults can fit in a twin size bed, but it may seem too short for adults over 6 feet tall. This size mattress is commonly used in smaller bedrooms or in guest rooms.

Who is a Twin mattress suitable for?

A twin mattress is great for children who have outgrown their cribs and need freedom to get in and out of bed. It is also a good fit for young teenagers who are under 6 feet tall. While twin beds can be used for guests, it may seem small for some adults.

Twin vs. TwinXL

Twin mattresses are 5 inches shorter than twin XL mattresses. The extra length of a twin XL makes a major difference for taller children or adults. Since the width is the same for both beds, they can only fit one sleeper.

Twin vs. Crib/Toddler

A twin is the smallest mattress available, other than a crib or toddler mattress. Oftentimes, children will upgrade from a crib mattress to a twin mattress when they are old enough to climb out of their crib. A twin mattress with a low bed frame is ideal for children who will not outgrow it for several years.