Choosing a sofa for a small room: the measurements

Sofa width, depth, seat height and arm style for small living rooms, plus how to check doors, stairs and lifts before you buy.

The sofa is usually the biggest piece of furniture in a small home and the most expensive mistake if it does not fit. It is also the piece people most often buy based on how it looks in a large showroom. This guide covers the measurements that matter and the checks to do before you order.

Width: two seats are usually enough

• Two-seaters: about 140-180 cm wide.
• Three-seaters: about 190-230 cm.
• Loveseats and compact sofas: 120-160 cm.

In rooms under about 14 m², a two-seater of 150-180 cm is the usual sweet spot. Leave at least 30-45 cm between the sofa's end and a wall or door so the room does not feel crammed, and keep main walkways of 75-90 cm.

Depth: the number that matters most

Depth decides how much floor is left in front of the sofa. Standard sofas are 85-100 cm deep; compact ones 75-85 cm. Deep "lounge" sofas can exceed 100 cm. In a narrow room, 10 cm less depth is often the difference between an open path and a squeeze.

Seat depth (front edge to back cushion) is also about comfort: 50-55 cm suits most people sitting upright; 60 cm or more is for lounging with legs up. Shorter people often find deep seats uncomfortable.

Arms and legs change the look

• Slim or no arms: saves 10-30 cm of width compared with chunky rolled arms.
• Raised legs: show floor under the sofa, which makes the room look larger and makes cleaning easier.
• A low back: keeps sight lines open, good in front of a window.

Seat height

Standard seat height is about 42-45 cm. Low sofas (38-40 cm) look lighter but can be hard to get up from. Check it if older family members visit often.

Before you buy: check the way in

This is the step most people skip.

1. Measure every door on the route: front door, apartment door, living room door. Measure the actual opening with the door open, not the frame.
2. Measure the stairwell: the narrowest width, the height under any low ceiling, and the turns. Tight turns are where sofas get stuck.
3. Measure the lift: inside width, depth, height and the door opening; also the diagonal.
4. Compare with the sofa's smallest dimension. A sofa usually goes through a door on its depth or height. As a rule, if the sofa's depth or height is smaller than the door width, it can usually pass if tilted.
5. Check whether legs and arms come off; removable legs save several centimetres.

Our Will it fit? tool checks floor fit, walkway and door width for you.

The tape test

Tape the sofa's footprint (width x depth) on the floor with masking tape and live with it for a day. Walk around it, open doors and drawers, put the coffee table in place. If you keep stepping on the tape, the sofa is too big. Also check what sits above the spot: a window sill or radiator under the window limits how high the sofa back can be.

Alternatives to a full sofa

• A loveseat or compact two-seater.
• A daybed: sofa during the day, bed for guests, often with storage drawers.
• One sofa plus an armchair, rather than one long sofa.
• A sofa bed, if guests stay often; check the open length (often 200-220 cm).

Fabric and colour in small rooms

Light, solid colours make a sofa look smaller; dark sofas can work against a dark wall where they blend in. Washable or removable covers matter more in small homes, where the sofa is also the dining spot and the guest bed.

A sample choice for a 3 x 4 m room

• Two-seater around 160-180 cm wide, 80-85 cm deep, on legs, slim arms.
• 80 cm walkway in front.
• Armchair by the window instead of a three-seater.

Common mistakes

Measuring only the room and not the stairwell. Buying a deep corner sofa that cuts the room in half. Forgetting the radiator under the window. And skipping the tape test because "it looked fine in the shop".

Checklist

• Width under about 180 cm for rooms under 14 m².
• Depth 75-85 cm in narrow rooms.
• Raised legs and slim arms.
• Doors, stairs and lift measured.
• Tape test done.
• Return policy checked.

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