How to tell if furniture will fit: the room, the piece and the way in

In one survey of 1,500 UK furniture buyers, 60% had bought furniture online that turned out to be the wrong size, and 49% had ordered something that would not go through the door or up the stairs (Fixtuur, via CMOtech, 2025; Fixtuur sells 3D tools, so read it as a rough guide). The fix is cheap: a tape measure, a roll of masking tape and twenty minutes.

This guide gives the whole method, in the order that catches mistakes earliest. It works for a sofa, a bed, a wardrobe, a dining table or anything else with a box size on its listing.

The checks at a glance

1. Measure the room

Use a metal tape at least 5 m long, or a laser measure. Write every number in centimetres on a rough sketch as you go.

1. Measure each wall at floor level, from skirting to skirting. That is where the furniture stands, and skirting and old plaster can take a few centimetres off the figure you get higher up. Measure long walls twice: old walls are rarely straight.
2. Mark every door, its width and which way it swings. A door needs a clear quarter-circle as wide as the door itself.
3. Mark the windows, with the height of each sill from the floor. A sofa or desk under a window must be lower than the sill.
4. Mark radiators, sockets, the TV point and switches. Copenhagen's heat utility HOFOR advises at least 20 cm between a radiator and furniture.
5. Measure the ceiling height where a tall piece will stand, especially under a sloped loft ceiling or a beam.

Our living room clearances guide has every gap these measurements feed, with its source.

2. Measure the piece, and the space it needs

The listing gives the box: width, depth and height. That is the footprint. But no piece works inside its footprint alone. A sofa needs legroom, a bed needs a way in, a chest of drawers needs its drawers pulled out. Add that space before you decide.

Two more things about the listing. Sizes vary: one maker says its sofas can differ from the listed size by about 5%, so allow a margin (Darlings of Chelsea). And delivery packaging adds a little width and depth, which matters at a tight door (S2 Sofas).

3. Check the piece against its wall

Fitting the floor is not the same as looking right. Designers like a sofa to span about two thirds of the wall behind it (Livingetc, 2025). One designer calls it "a proportion cue, not a commandment", but it is a useful test: on a 360 cm wall, a sofa of about 240 cm looks settled, 300 cm looks squeezed, and 150 cm looks lost.

Then look at what the wall already holds. A tall bookcase across part of a window, a headboard over a socket, or a sofa back above the sill all fit on paper and annoy you every day. For pieces that go on the wall, our picture height calculator and TV height calculator give the heights.

4. Check the way in

Most failed deliveries fail here, not in the room. The rules in brief:

• Measure the clear width, not the door. Open it to 90° and measure from the door stop to the face of the open door. A standard 762 mm UK internal door leaves about 70–72 cm.
• The piece's smallest end must pass. For a sofa, that is its depth or height, whichever is smaller. If both are too big, it can tip through when its diagonal depth is less than the clear width.
• Then the length has to turn into the hall or up the stairs. Approved Document K asks for 2 m of headroom over new stairs, but older and loft stairs can have less.
• In a flat, measure the lift and the shared entrance. A sofa can pass the front door and still stop at a narrow lift or stairwell (S2 Sofas).
• Leave 5 cm to spare for packaging, handles and walls that are not square.

Our sofa fit calculator runs all three door tests on your own numbers and draws the doorway with the sofa's end in it. Beds and wardrobes usually come flat-packed, but a mattress does not: check a king mattress (150 cm wide) goes round your stair turn on its side.

5. Tape the footprint on the floor

This is the step that turns numbers into a feeling, and it costs one roll of masking tape. Furniture shops suggest it for good reason (S2 Sofas; Shawcross).

1. Tape the outline of the piece at its listed width and depth, square to the wall, where it would stand.
2. Tape the coffee table or bedside table too, with its gap. A sofa outline alone looks smaller than the group will.
3. Live with it for a day or two. Walk round it, carry a laundry basket past it, sit where you would sit. Shawcross suggests re-taping at the next size up and trying that too.
4. Open everything through the tape. Every door, the wardrobe, the drawers, the oven if it is a kitchen. If anything hits the tape, the piece is too big or in the wrong place.
5. Mark the height on the wall with a strip of tape at the top of the sofa back or the headboard. Check it against the sill, the sockets and the art.

6. Make a cardboard mock-up for the hard parts

Tape shows the floor. Cardboard shows the bulk and the way in.

• For a tight route, cut a cardboard shape of the sofa's end (its depth by its height) and carry it through each door, round the hall and up the stairs (S2 Sofas). If the cardboard catches, the sofa will.
• For a tall piece, stack boxes to its height where it will stand. A 180 cm wardrobe looks very different from a taped square.
• For a bed, lay flattened boxes over the taped mattress size and walk round all three sides.

7. The walkway check

Once the tape is down, find the narrowest point on each route through the room. Measure there, not in the middle: a sofa arm, a plant or a radiator often steals the last 10 cm.

If a route fails, move the piece before you change it. Turning a sofa, sliding a bed 10 cm or swapping two pieces often fixes a walkway for free. Our small living room layouts show eight ways round the usual UK room shapes.

Worked example: will this sofa fit my room?

The room is a 3.6 × 3.3 m living room in a 1930s semi, as in the drawing above. The sofa is a three-seater, 220 cm wide, 95 cm deep and 85 cm high, with a diagonal depth of 68 cm on the listing. The living room door is a standard 762 mm door.

So the sofa fits the room well, and goes in once the door comes off. Before ordering, measure the real clear width of this door and the front door, and ask the shop whether the feet unscrew.

A bed, too. In a 3 × 3 m bedroom, a double bed (135 × 190 cm, about 200 cm long with a headboard) leaves 100 cm at the foot. Put a 60 cm-deep wardrobe on the side wall and the bed 75 cm from it, and the other side keeps 30 cm. That is enough for a shelf, not for a second way in.

Six mistakes that cause returns

• Measuring the room but not the way in. The front door, the hall turn, the stairs and the lift each need their own check.
• Using the door's size, not its clear width. The open door and the stop take 4–5 cm off a 762 mm door.
• Forgetting the space to use the piece. A bed that fits wall to wall with no way in has not really fitted.
• Measuring above the skirting. The furniture stands at floor level, where the room is a little narrower.
• Trusting the photo. Shop photos are styled in big rooms. Go by the numbers on the listing.
• Buying the rug first. The rug's size follows the sofa. Our rug size calculator picks it once you know the sofa.

See the piece in your own room before you buy

Tape and cardboard work, but they test one piece at a time, and you have to move them every time you change your mind. Snuug, the iPhone room app, does the whole method in your own room, at its real size.

• Your room, measured. You walk once round the room with your iPhone, and Snuug rebuilds it in 3D to within about 3% of its real size, in our tests of ten homes. The doors, windows and radiators are where they really are.
• Paste a shop link and see the piece in your room. The sofa you are looking at appears at its listed size, on your own floor, against your own walls.
• Move it and watch the walkway. Every piece moves in 5 cm steps, and Snuug checks the walkways and clearances as you go, so you see how many centimetres are left before you order.
• Try the next size up in a second. Swap the two-seater for the three-seater, turn the bed, paint the wall behind it: no tape to peel up.

Our team checks every room by hand before it reaches you, so the walls are right when you start. Within about 3% is close enough to plan a layout, choose a rug or check a sofa fits the room. For a fit within a few centimetres, take the tape to that one gap, as you would anyway. Your first room is free.

Questions

How do I know if furniture will fit in my room?

Measure the room at floor level, then add up the piece's footprint and the space it needs to be used: 35–45 cm of legroom in front of a sofa, about 75 cm beside a bed, and a walkway of 75–90 cm on the main route. If the total is less than the room, tape the footprint on the floor with masking tape and walk round it for a day or two. Last, check the way in: every door, hall and stair on the route.

How much space do you need around furniture?

Designers keep the main walkway 75–90 cm (30–36 in) wide, and accept 45–60 cm for a path few people use. Leave 35–45 cm between a sofa and its coffee table. Approved Document M asks for 750 mm beside and at the foot of the bed in new accessible homes, and the NKBA gives 81–112 cm behind a dining chair, depending on whether anyone walks past.

Will a 3-seater sofa fit in my living room?

Check two numbers. First, the wall: designers like a sofa to be about two thirds of the wall behind it, so a 220 cm sofa suits a wall of about 330 cm. Second, the depth: add the sofa (85–100 cm deep for most three-seaters), 35–45 cm of legroom, the coffee table and a 75–90 cm walkway. If that sum is less than the room, it fits the room. Then check it gets through the door.

How do I visualise furniture in a room before buying?

Mark the footprint on the floor with masking tape, using the width and depth from the listing, and walk round it as if the piece were there. For a tall piece, stack boxes to its height. For a tight route, cut a cardboard shape of the sofa's end and carry it through each door. A room app that rebuilds your room at its real size lets you try several pieces without the tape.

Is there an app to see if furniture fits in my room?

Yes. Room apps that rebuild your room in 3D at its real size let you place a piece and see the gaps around it. Whatever you use, check the route in as well as the room, and measure the last tight gap with a tape before you order, because listed sizes can differ from the real piece by a few per cent.

How much space do you need around a bed?

About 75 cm beside each side you get in from, and at the foot. That is Approved Document M's figure for new accessible homes (750 mm), and it is a sensible minimum anywhere. A UK double bed is 135 × 190 cm and a king is 150 × 200 cm, before the frame and headboard.

Editorial notes

Written by the Snuug team and checked on 1 November 2026. A number with no source beside it is a designers' rule of thumb, not a study.

1. Fixtuur survey of 1,500 UK furniture buyers, via CMOtech UK (9 Dec 2025): 60% had bought furniture online in the wrong size, 49% items that did not fit through the door or up the stairs. Fixtuur sells 3D tools
2. S2 Sofas (28 Aug 2025), How to measure for a sofa delivery (masking tape footprint, cardboard mock-up, lifts, packaging), read 31 Oct 2026
3. Shawcross, How to measure your room and doorways for a new sofa (tape a rectangle and live with it for a day or two). The page refused our fetch; advice from search summaries, 31 Oct 2026
4. Darlings of Chelsea, Sofa fit guide (PDF): diagonal depth, and sizes varying by about 5%, read 31 Oct 2026
5. Furniture Choice, How to measure a sofa (sofa depths), read 31 Oct 2026
6. Howarth Timber (Green, 14 Sep 2026), UK door sizes (762 mm is the most common internal door in England and Wales)
7. HM Government, Approved Document M, Volume 1 (2015, 2016 amendments): clear openings, 750 mm round a bed, 900 mm halls, checked 24 Oct 2026
8. HM Government, Approved Document K (2013): 2 m stair headroom, checked 24 Oct 2026
9. Emily Henderson, Living room rules to know (walkways 30–36 in; 18–24 in in a tight room). The page refused our fetch; figures from search summaries, checked 15 Oct 2026
10. Castlery UK (5 Aug 2026), Coffee table dimensions (35–45 cm gap; ½–⅔ of the sofa)
11. Livingetc (Wolfe, 22 Aug 2025), The two-thirds rule (sofa about two thirds of its wall)
12. NKBA, Kitchen Planning Guidelines (clearance behind a seated diner)
13. Silentnight, Bed and mattress size guide (UK sizes in cm), read 31 Oct 2026
14. HOFOR (1 Jan 2021), Let the heat spread throughout the room (at least 20 cm from a radiator)