Mattress Sizes UK: Size Guide & Prices
From bunk to super king, every Carter & Lewis mattress is made to order in the standard UK sizes. Here's how big each one is, who it suits and what it costs, so you can pick the right size before you pick the mattress.
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| Size | Width | Length | Best for | Prices from |
|---|---|---|---|---|
| Bunk | 2ft 6in (75cm) | 6ft 3in (190cm) | Bunk beds, cabin beds and day beds | £320 |
| Single | 2ft 6in – 3ft (75–90cm) | 6ft 3in (190cm) | Children, teens, guest rooms and solo sleepers | £320 |
| Small Double | 4ft (120cm) | 6ft 3in (190cm) | Single adults who like room, or couples in compact rooms | £380 |
| Double | 4ft 6in (135cm) | 6ft 3in (190cm) | Couples — the UK’s most popular size | £380 |
| King | 5ft (150cm) | 6ft 6in (200cm) | Couples who want more personal space | £430 |
| Super King | 6ft (180cm) | 6ft 6in (200cm) | Couples, families and anyone who spreads out | £450 |
Standard UK dimensions. Each mattress page lists its exact size and depth; if your bed frame is non-standard, our team can make to measure — just ask.
How to choose your size
Measure the bed, not the old mattress
Old mattresses sag and spread. Measure the inside of the bed frame or the top of the divan base, width then length, and match it to the table.
Give each sleeper room
A double gives two people 67.5cm each, slightly less than a single. If either of you is tall, broad or restless, or you share with a child or a dog, a king or super king makes a real difference.
Leave room to walk around
Allow about 60cm (2ft) of clear floor on the sides you get in and out, and at the foot of the bed if it faces a door or wardrobe.
Bunk
Slim and narrow for bunk and cabin beds.
Bunk mattressesSingle
2ft 6in to 3ft for kids, teens and guests.
Single mattressesSmall Double
4ft for single adults or compact rooms.
Small double mattressesDouble
4ft 6in, the UK's favourite for couples.
Double mattressesKing
5ft wide and 6ft 6in long.
King size mattressesSuper King
6ft wide for maximum space.
Super king mattressesIs a UK king the same as a US or European king?
No. A UK king is 150 x 200cm, close to a US queen. European and US sizes differ, so always buy UK sizes for a UK bed frame.
Do you make non-standard sizes?
Every mattress is made to order, so ask our team about made-to-measure sizes with your exact measurements.
Does the price change by size?
Yes, larger sizes use more springs and fillings. The table shows the lowest price for each size; each size page lists every mattress at its price.