Bed Size Calculator: What Size Bed Fits My Bedroom?
Enter the measurements of your bedroom and this calculator checks every standard UK bed size, from small single to super king, against the floor space, and tells you which ones fit and how much room each leaves to walk round. The mattress size is not the size of the bed: a frame and headboard usually add several centimetres to the width and more to the length, so measure the frame you plan to buy if you can.
Your bedroom
Measure wall to wall at skirting level, in centimetres. If a chimney breast, radiator or door frame narrows the wall, measure the clear stretch the bed will actually stand in.
Furniture means a wardrobe, chest of drawers or dressing table. A fitted wardrobe is usually about 60 cm deep. Doors and drawers need more room in front of them than a plain walkway does.
These are starting allowances. Check the external dimensions on the listing of the bed you like and enter the difference from the mattress size. A divan with a slim headboard adds very little; a sleigh bed or a deep upholstered headboard adds much more.
How the calculator works
It takes the six standard UK mattress sizes: small single (75 x 190 cm), single (90 x 190 cm), small double (120 x 190 cm), double (135 x 190 cm), king (150 x 200 cm) and super king (180 x 200 cm). It adds your frame allowances to get the size of the bed on the floor, then adds the space you need around it.
Beside the bed it keeps a walking strip on each side you get in from. If you have bedside tables, that strip is at least as wide as the table, because the table sits in it. At the foot it keeps a strip to walk past. In front of a wardrobe or chest of drawers it keeps a wider strip so doors can swing and drawers pull out with you standing in front of them. Each bed is then checked at three levels:
| Level | Walking strip beside and below the bed | In front of a wardrobe or drawers |
|---|---|---|
| Comfortable | 70 cm | 80 cm |
| Workable | 60 cm | 75 cm |
| Tight | 50 cm | 60 cm |
These are working figures that interior designers commonly plan around, not regulations. A tight room can still work for a guest bedroom used a few nights a year; in a main bedroom you share, aim for comfortable or workable on both sides.
Before you buy
- Mark it out on the floor. Masking tape at the full frame size shows the result far better than numbers do. Open the wardrobe doors and the bedroom door while you stand inside the outline.
- Check the route in. A super king may fit the room but not the stairs of a London terrace or a narrow flat corridor. Split-base divans, flat-pack frames and roll-up mattresses get round this.
- Watch the radiator and the window. A headboard in front of a radiator blocks the heat; see our radiator BTU calculator if you are moving one. A bed under a window needs a headboard low enough to clear the sill.
- Size the rug and the lights with the bed. Our rug size calculator and pendant light height calculator work from the bed you choose. For the wider room, see our guide to bedroom interior design.
The Folio
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