138 x 188 cm

At a Glance


138 x 188 cm

Comfortably Sleeps
Total Sleep Area
Space Per Sleeper

In Detail

What are the dimensions of a Double size bed?

The dimensions of a double size mattress are 138 centimetres by 188 centimetres. A noticeable increase in width makes a double bed great for a larger teenager or a single adult. If you sleep with a pet, this size mattress will be much more enjoyable than a single or king single. For comparison, many hotels put two double beds in a double room. They can comfortably fit a single adult with pets or two adults without pets.

Who is a Double mattress suitable for?

Double mattresses are a good pick for a single adult who enjoys more sleeping surface than a single. The extra width allows back and stomach sleepers to stretch out. It is also a good fit for a guest room, especially if you often have partners visit. Two adults can be comfortable on this size bed for a few days, but it would be best to buy a larger size if the mattress is more permanent.

Double vs. Queen

A double mattress has a slightly smaller length and width than a queen size mattress. It is 15 centimetres less in width and 16 centimetres less in length. While both can fit two adults, the double is better for smaller sleepers or those without pets. A queen bed will allow a few more centimetres to stretch out or squeeze in a pet.

Double vs. King Single

If you're debating between a double mattress and a king single mattress, the main difference is the width. A double has an additional 31 centimetres across the surface, although it loses 16 centimetres in length compared to a king single. Single adults usually prefer a double size bed over a king single.