UK Double Mattresses
The UK double (135 x 190cm) is Britain's traditional couples' size: room to share, in a footprint that suits most bedrooms.
Why choose a double?
- It's the long-standing UK standard for two people sharing.
- It fits comfortably where a king would dominate the room.
- Most mattress ranges include a double, so the choice is wide.
- Double sheets and duvets are stocked everywhere, at every price.
Allow at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm; double sheets and a 200 x 200cm double duvet fit.

Emma Original Mattress
Why choose a double?
- It's the long-standing UK standard for two people sharing.
- It fits comfortably where a king would dominate the room.
- Most mattress ranges include a double, so the choice is wide.
- Double sheets and duvets are stocked everywhere, at every price.
Allow at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm; double sheets and a 200 x 200cm double duvet fit.
How big is a UK double mattress?
135 x 190cm, or 4ft 6in wide by 6ft 3in long.
Is a double big enough for a couple?
It works, and it's the traditional couples' size in the UK. Each person gets about 67cm of width, which is less than a single bed each, so if your room and budget stretch to a king you will notice the difference.
What size room do I need for a double bed?
As a minimum, allow around 60cm of walkway around the sides and foot of the bed: about 2.6m x 2.8m of floor space. A room of roughly 3m x 3m takes a double comfortably.
What bedding fits a double mattress?
Double fitted sheets and a double duvet (200 x 200cm).
Should I choose a double or a king?
If two of you share the bed every night and the room allows, a king adds 15cm of width and 10cm of length, usually for a modest step up in price. The double wins where space is tight.