How to Measure Your Bedroom for a New Bed: A UK Metric Planning Checklist
, by RSB FURNITURE, 4 min reading time
A practical UK-metric checklist for measuring a bedroom, checking access, and comparing standard mattress sizes before choosing a new bed frame.
Choosing a new bed starts well before you select a fabric, headboard shape or storage option. Measuring the bedroom and the route into it helps you compare bed sizes calmly, rather than discovering a problem once the room is already arranged. This UK-metric planning checklist focuses on the measurements that matter and separates the mattress size from the finished bed-frame footprint.
Start with the standard UK mattress size
Standard mattress dimensions give you a useful starting point, but they are not the same as the outside dimensions of a finished bed. Use the mattress measurements below as a planning guide, then confirm the exact frame dimensions on the relevant product page before you make a final decision.
| Standard UK mattress size | Metric dimensions | Useful planning note |
|---|---|---|
| Single | 90 × 190 cm | Measure the available width as well as the length; the finished frame may be wider and longer. |
| Small double | 120 × 190 cm | A practical comparison point for a compact guest room or a single sleeper wanting extra width. |
| Double | 135 × 190 cm | Plan the room around the full frame, bedside furniture and the routes you use every day. |
| King | 150 × 200 cm | The mattress is longer than a standard double, so check the end-of-bed space carefully. |
| Super king | 180 × 200 cm | Confirm that both the room and access route can accommodate the finished bed frame. |
When you are comparing products, use the seller’s current product specification for the actual frame dimensions. Upholstery, curved ends, headboards, side rails and storage mechanisms can all change the overall footprint. If a measurement is not stated, ask for it before placing an order rather than assuming it matches the mattress size.
Measure the usable bedroom footprint
Begin by measuring the room’s width and length in centimetres, then note any features that reduce the usable floor area: radiators, built-in wardrobes, chimney breasts, windows that open into the room, low sills and doors. A simple sketch is enough. Mark the wall where the headboard is most likely to sit, then use masking tape or paper on the floor to visualise the mattress size you are considering.
Next, allow for the complete bed frame rather than the mattress outline alone. Keep the route to the door, storage, windows and switches practical for the way you use the room. Instead of relying on a universal clearance figure, test the space against your own bedside tables, wardrobes, drawers and daily route around the room. That approach is especially useful where the bedroom has an irregular shape.
Check the bed style as well as the mattress size
A tall headboard or a shaped foot end can be the focal point of a bedroom, but it also makes the finished frame’s measurements more important. If you are considering an upholstered scroll style, compare the room plan with the product details for the Diamond Essence scroll sleigh bed. The product page is the right place to confirm the current options and specifications before you finalise the layout.
For a room where organised storage is a priority, it is worth checking not only the bed footprint but also how the storage is intended to be accessed. The Sovereign Bliss scroll bed with storage options is a relevant example to review alongside the available floor space and nearby furniture. Avoid positioning a bedside cabinet, chest or radiator so that it interferes with the way you need to use the bed.
Measure the access route before you order
The bedroom is only one part of the plan. Measure the narrowest points from the entrance to the intended room, including the front door, internal doors, hallways, stair turns, landings and lift access where relevant. Record widths and heights in centimetres, and note low ceilings, handrails, light fittings or tight corners. Check the supplier’s current delivery and assembly information separately; it can vary by product and service.
This step is useful even if a bed is supplied in components. The route still needs to work for the largest individual parts and for safe handling. Keep the measurements with the product details so you can discuss any unusual access with the retailer before ordering.
Finish with a room-specific checklist
- Record the bedroom width and length in cm.
- Mark doors, windows, radiators, wardrobes, sockets and any fixed projections.
- Choose a standard mattress size as a starting point, then confirm the exact finished frame dimensions.
- Visualise the full footprint, not only the mattress.
- Test the routes you use most often: the door, wardrobe, bedside storage and window.
- Measure the narrowest points on the delivery route in cm.
- Recheck the current product specification, delivery information and options before ordering.
For more help comparing standard dimensions, read our guide to choosing the right bed size for your room. If you are also considering how storage may support a compact layout, see why storage beds can be useful in small spaces.