Bed Size Guide

Choosing the right bed size is about more than just how much space you have. It affects how well you sleep, how your room feels, and how practical your bedroom is day to day. This guide covers every UK standard bed size, the room dimensions you need, and who each size suits best.

In this guide:
UK Bed Sizes | Room Size Requirements | Who Each Size Suits | How to Measure Your Room | Access and Delivery | Common Questions

UK Standard Bed Sizes

All UK bed sizes are standardised, though minor variations of 1–2cm can occur between manufacturers. Always check the specific dimensions on the product page before ordering.

• Single: 90 x 190cm (3ft x 6ft 3in)
• Small Double: 120 x 190cm (4ft x 6ft 3in)
• Double: 135 x 190cm (4ft 6in x 6ft 3in)
• King: 150 x 200cm (5ft x 6ft 6in)
• Super King: 180 x 200cm (6ft x 6ft 6in)

Note: European sizes differ from UK sizes. If you are buying a European bed frame, check that your mattress dimensions match before ordering.

Minimum Room Size Requirements

As a general guide, allow at least 60cm of clearance on each accessible side of the bed, and at least 90cm at the foot of the bed for comfortable movement. Here are the minimum recommended room sizes for each bed:

• Single: Minimum room size approximately 190 x 270cm. Suits smaller bedrooms and box rooms.
• Small Double: Minimum room size approximately 220 x 270cm. Works well in medium-sized single rooms.
• Double: Minimum room size approximately 260 x 300cm. The most common choice for standard double bedrooms.
• King: Minimum room size approximately 300 x 330cm. Requires a generously sized bedroom.
• Super King: Minimum room size approximately 370 x 360cm. Best suited to large master bedrooms.

These are minimum recommendations. More space always makes a bedroom feel more comfortable and functional.

Who Each Size Suits

Single (90 x 190cm)

The standard single is ideal for children aged 5 and over, teenagers, and single adults in smaller rooms. It provides enough space for a comfortable night's sleep without taking up too much floor space. If you are furnishing a child's room, a single gives you room for a desk, wardrobe, and storage alongside the bed.

Small Double (120 x 190cm)

The small double — sometimes called a three-quarter bed — is a popular choice for single adults who want more sleeping space than a single but are working with a smaller room. It can accommodate two people but is a tight fit for regular couple use. It is also a good option for a guest bedroom where space is limited.

Double (135 x 190cm)

The double is the most popular bed size in the UK. It suits couples comfortably in most standard bedrooms and gives single sleepers generous space. Each person in a couple has approximately 67cm of width — slightly less than a single bed each, so couples who value personal space may prefer a king.

King (150 x 200cm)

The king size offers noticeably more width and length than a double. The extra 10cm in length makes it a better choice for taller sleepers (over 6ft). Couples who share a bed with a pet, or who simply want more room to move, will appreciate the additional space. A king size bed requires a properly sized bedroom to avoid the room feeling cramped.

Super King (180 x 200cm)

The super king is the largest standard UK bed size, offering maximum sleeping space. It is ideal for couples who prioritise sleep comfort, larger master bedrooms, and those who share their bed with children or pets. A super king requires a large room — it will dominate a smaller space and leave little room for other furniture.

How to Measure Your Room

Before ordering, measure your room carefully:

• Measure the full length and width of the room at floor level
• Note the position of doors, windows, radiators, and built-in wardrobes — these affect where the bed can be placed
• Allow at least 60cm clearance on each side of the bed you need to access
• Allow at least 90cm at the foot of the bed for comfortable movement
• If you plan to have bedside tables, factor in their width on each side
• Use masking tape on the floor to mark out the bed dimensions before ordering — this gives you a clear visual of how the bed will fit

Access and Delivery

A bed that fits your room perfectly is no use if it cannot be delivered into it. Before ordering, check:

• Front door width: Standard UK front doors are approximately 76–81cm wide. Most bed frames are delivered in flat-pack boxes and assembled in the room, but always check product dimensions.
• Staircase width and turning space: Measure the narrowest point of your staircase and any tight corners or landings.
• Bedroom door width: Internal doors are typically 76cm wide. Check that flat-pack boxes can be carried through.
• Ceiling height on stairs: Relevant for larger items such as mattresses, which may need to be manoeuvred upright.

If you have any concerns about access, please contact us before ordering and we will advise based on the specific product dimensions.

Common Questions

What is the most popular bed size in the UK?

The double (135 x 190cm) is the most popular bed size in the UK, followed by the king (150 x 200cm). King size beds have grown significantly in popularity as bedroom sizes in newer homes have increased.

Is a king size bed worth it?

For couples, a king size bed offers meaningfully more space than a double — approximately 7.5cm more per person. If your room can accommodate it comfortably, most couples who upgrade to a king do not go back. The extra length (200cm vs 190cm) is also beneficial for anyone over 6ft tall.

Can two people sleep in a small double?

Yes, but it is a tight fit. A small double gives each person approximately 60cm of width, which is less than a single bed. It works for occasional use or couples who do not mind being close, but for regular couple use a double or king is more comfortable.

Do UK and European bed sizes match?

No. European bed sizes differ from UK sizes. A European double (140 x 200cm) is wider and longer than a UK double (135 x 190cm). Always check that your mattress and bed frame are the same size standard before purchasing.

What size mattress do I need for my bed frame?

Your mattress should match the internal dimensions of your bed frame. Most UK bed frames are designed for standard UK mattress sizes. Check the product page for the recommended mattress size, or contact us if you are unsure.

Ready to find your bed? Browse our bed collection or mattress collection. Need more help? Contact us and we will be happy to advise.

You may also find these guides useful: Mattress Buying Guide | Mattress Firmness Guide | All Buying Guides