UK Bed Sizes Guide: Complete Dimensions for Every Size
Updated May 2026 • 6 min read
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 |
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 |
|---|---|---|
| Single | 7m² | 9m²+ |
| Small Double | 8m² | 10m²+ |
| Double | 9m² | 12m²+ |
| King Size | 11m² | 14m²+ |
| Super King | 14m² | 17m²+ |
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
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