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Choosing the right bed size is one of the most important decisions when buying a new bed. Too small and you'll feel cramped; too large and it will dominate your room. This guide covers exact UK bed dimensions, ideal room sizes, and which size works best for different situations.

UK Bed Size Chart

Bed Size Width Length Best For
Small Single 75cm (2ft 6in) 190cm (6ft 3in) Young children, very compact rooms
Single 90cm (3ft) 190cm (6ft 3in) Children, teens, guest rooms
Small Double 120cm (4ft) 190cm (6ft 3in) Solo adults, small spare rooms
Double 135cm (4ft 6in) 190cm (6ft 3in) Couples in smaller rooms, solo adults who want space
King Size 150cm (5ft) 200cm (6ft 6in) Couples — most popular UK choice
Super King 180cm (6ft) 200cm (6ft 6in) Couples who want maximum space
Note: UK bed sizes differ from European and US sizes. Always check width × length when ordering mattresses or bedding internationally.

What Room Size Do You Need?

As a rule of thumb, leave at least 60–70cm clearance on each side of the bed you'll be getting in and out of, and at least 90cm at the foot. For ottoman beds, the end-lift mechanism requires approximately 1 metre at the foot — or choose a side-lift instead.

Bed Size Minimum Room Size (comfortable) Ideal Room Size
Single7m²9m²+
Small Double8m²10m²+
Double9m²12m²+
King Size11m²14m²+
Super King14m²17m²+

Small Double vs Double: Which Should You Choose?

The small double (120cm) is 15cm narrower than a standard double (135cm). As a couple, that 15cm makes a noticeable difference — particularly for taller or broader individuals. For solo sleepers, either works well, though the standard double gives far more room to spread out.

If floor space is restricting your choice, an ottoman storage bed removes the need for separate wardrobes or chest of drawers, allowing you to fit a larger bed into the same room.

King Size vs Super King: Is the Extra Width Worth It?

The step up from king (150cm) to super king (180cm) adds 30cm — which is the equivalent of roughly one person's shoulder width. For couples who find themselves disturbed by a partner's movement, super king is well worth considering. For rooms under 14m², a king size is usually more practical.

Frequently Asked Questions

The king size bed (5ft / 150cm x 200cm) is the most popular choice for couples in the UK, offering ample space without overwhelming most master bedrooms. Double beds (4ft 6in) remain the top choice for single occupants who want extra room.

UK king size measures 150cm x 200cm (5ft x 6ft 6in). US king size is wider at 193cm x 203cm (76 x 80 inches). If you are buying bedding from the US, you will need to check sizing carefully as they are not interchangeable.

A small double, also called a three-quarter bed, measures 120cm x 190cm (4ft x 6ft 3in). It is ideal for teenagers, guest rooms, or adults in compact spaces who want more room than a standard single without the full footprint of a double bed.

Shop by bed size

All our beds are available in every UK size with free delivery and a 10-year guarantee.