How to Measure Up for Double Beds: A Simple Sizing Guide

To measure for a double bed, start with the mattress size, which in the UK is 135cm wide by 190cm long, then add the external frame dimensions, which are often 10cm to 30cm wider and longer depending on the headboard and side rails. Finally, allow around 60cm to 70cm of clear floor on each side you need to access and at the foot of the bed. Measure the room, the doorway and the staircase as well, and you will avoid almost every common sizing problem.

It sounds straightforward, but a few centimetres can make the difference between a bedroom that flows and one where you edge sideways around the bed. If you are already browsing our modern double fabric beds UK sale, keep the steps below to hand so you can check each frame against your room before deciding.

Know the Standard UK Double Bed Size

A standard UK double mattress measures 135cm by 190cm, sometimes described as 4ft 6in by 6ft 3in. This is different from the European double, which is often 140cm by 200cm, and from the American full size. If you buy a frame and mattress from different places, check that both follow UK sizing, as a European mattress will not sit properly in a UK frame.

It also helps to know the neighbouring sizes. A small double is 120cm by 190cm, and a king is 150cm by 200cm. If your room is borderline for a double, a small double saves 15cm of width. If you have space to spare, a king adds width and 10cm of length, which taller sleepers appreciate. Looking across our wider modern bedroom furniture UK range will give you a feel for how different frame styles affect the overall footprint.

Step One: Measure the Room

Use a metal tape measure rather than a fabric one, as it gives more accurate readings over longer distances. Measure the length and width of the room at floor level, wall to wall, ignoring skirting boards. Then note:

• The position and width of the door, and which way it swings.
• Windows, including the height of the sill from the floor.
• Radiators and their depth from the wall.
• Plug sockets and light switches.
• Built in wardrobes, chimney breasts and alcoves.

Sketch a simple floor plan on paper with these features marked. It does not need to be to scale, but writing the measurements on the sketch makes it much easier to compare frames later.

Step Two: Check the External Frame Dimensions

Product listings normally show the mattress size and the overall frame dimensions. The second figure is the one that matters for your room. A minimal wooden or metal frame may add only a few centimetres to the mattress size. An upholstered frame with a padded surround, a deep headboard and a footboard can add considerably more.

Headboard depth is easy to overlook. A thick, cushioned headboard can push the mattress 10cm or more away from the wall, adding to the overall length. Some frames also have a footboard that extends beyond the mattress. Frames from our range of double wooden beds UK sale often have slimmer profiles than upholstered designs, which can help in tighter rooms.

Step Three: Allow Space to Move

A bed that fits wall to wall is not a bed that works. You need room to get in and out, make the bed, open drawers and walk past. As a practical guide:

• Leave around 60cm on each side where someone gets in.
• Leave at least 70cm at the foot if furniture with drawers or doors sits opposite.
• Leave about 90cm in front of a wardrobe with hinged doors.
• Keep the door able to open fully without hitting the bed.

Add these allowances to the frame dimensions to find the minimum room size. For example, a double frame that measures 145cm wide with 60cm clearance either side needs a wall of around 2.65m. If you only need access from one side, the requirement falls significantly.

Step Four: Mark It on the Floor

Numbers on paper can be misleading. Use masking tape or painter’s tape to mark the external outline of the frame on the floor. Add a second outline for bedside cabinets. Then walk around the space, open the door, open wardrobe doors and pull out any drawers. You will quickly see whether the layout feels comfortable or cramped.

This is also a good moment to check the position of sockets. Ideally, you want a socket within reach of each side of the bed for lamps and phone chargers.

Step Five: Measure the Route Into the Room

Many bed frames arrive flat packed, but some components, such as headboards and side rails, can still be long or bulky. Measure the width and height of the front door, any internal doors on the route and the bedroom door itself. On staircases, check the narrowest point and the height clearance at any turn or landing. Older terraced houses often have tight turns that limit the length of rigid items.

If you are considering a bed with a solid base or a fully assembled headboard, compare its largest dimension with the tightest point on the route.

Step Six: Consider Height

Height affects comfort and how the bed sits in the room. Measure your current bed from the floor to the top of the mattress. For most adults, a total height of between about 45cm and 55cm is comfortable, allowing your feet to rest flat on the floor when you sit on the edge.

Check the mattress depth too. Frames are designed for mattresses within a certain depth range, and a very deep mattress can make a low frame look top heavy. Our mattresses UK sale listings include depth information so you can match mattress and frame accurately.

If the bed sits beneath a window, measure the sill height. A tall headboard may block part of the window or clash with curtains.

Planning the Rest of the Bedroom

Once the bed fits, plan the furniture around it. Bedside cabinets should be roughly level with the top of the mattress. Wardrobes and drawers need clearance to open, and a dressing table needs space for a stool to slide out. Our guide to standard chest of drawers dimensions in the UK is helpful when working out what else will fit.

If you are weighing up whether to step up to a larger size, our article on UK king size bed dimensions for frames and rooms sets out how the extra width and length change the minimum room size.

Working Around Awkward Features

Few UK bedrooms are truly rectangular. Period homes often have chimney breasts with alcoves either side, bay windows and picture rails, while loft conversions bring sloping ceilings and dormer windows. Each of these affects where a double bed can go.

Chimney breasts: a chimney breast can make a natural headboard wall, with the alcoves holding bedside cabinets or shelving. Measure the width of the breast itself and the depth of each alcove. A double frame that is wider than the breast will overhang into the alcoves, which can look awkward unless the alcoves are shallow.

Bay windows: placing a bed in a bay rarely works because the curved walls leave little room for bedside furniture and the window is often the only source of light. It is usually better to keep the bay clear for a chair or dressing table and place the bed on a solid wall.

Sloping ceilings: in a loft room, measure the height of the ceiling at the point where the headboard will sit, and at the point where you will sit up in bed. A tall headboard may not fit beneath the slope, and you will want enough headroom to sit up without bumping your head. A low frame with a modest headboard is often the most practical choice.

Double Checking Before You Order

When you have chosen a frame, compare its external measurements with your sketch one final time. Confirm the mattress size, the overall width and length, the headboard height and the recommended mattress depth. Check the size of the largest boxed component and make sure it will pass through your doors and up the stairs. These few minutes of checking are well spent.

Common Measuring Mistakes

• Using the mattress size instead of the external frame size.
• Forgetting the depth of a padded headboard.
• Ignoring the swing of the bedroom door.
• Overlooking radiators that project from the wall.
• Assuming European and UK double sizes are the same.
• Not checking the route through the house.

Avoiding these mistakes takes only a little extra time and saves a great deal of frustration. When your measurements are ready, you can explore our full range at Furniture in Fashion, with free delivery to most UK mainland postcodes.

Frequently Asked Questions

What size is a UK double bed in centimetres?

A standard UK double mattress is 135cm wide and 190cm long. The frame will be larger, so always check the external dimensions.

How big does a room need to be for a double bed?

For access on both sides and at the foot, a room of around 2.7m by 3m is comfortable, though this depends on the frame and other furniture.

Is a European double the same as a UK double?

No. A European double is often 140cm by 200cm, slightly larger than a UK double. Make sure your mattress and frame use the same standard.

How much space should be around a bed?

Aim for about 60cm on each access side and 70cm or more at the foot, especially if wardrobes or drawers sit opposite.