How to Measure Up for Fabric Corner Sofas: A Simple Sizing Guide

To measure up for a fabric corner sofa, you need four sets of figures: the length of both walls the sofa will sit against, the clear floor depth in front of each side, the width and height of every doorway and stairwell on the delivery route, and the position of anything fixed such as radiators, sockets and window sills. Compare those numbers against the sofa’s overall width, return length, depth and back height, and leave room to walk around it. That is the whole process, and it takes less than half an hour with a tape measure and some masking tape.

Getting it right means your new sofa from our modern fabric corner sofas UK range arrives, fits and feels as though it was made for the room. The same method works for any shape in our wider modern sofas UK sale collection. This guide walks you through each step in order.

What You Will Need

• A metal tape measure at least five metres long.
• A roll of low tack masking or decorators’ tape.
• A notebook or the notes app on your phone.
• A second person, if possible, to hold the far end of the tape.

Measure in centimetres throughout, since most sofa specifications are listed that way, and write every figure down as you go rather than relying on memory.

Step One: Decide Which Corner

Before measuring, choose the corner where the sofa will sit. In most British living rooms, this is dictated by the television, the fireplace or the main window. Stand in the doorway and picture the seating facing the focal point. The corner that allows this without blocking the route through the room is usually the right one.

This decision also sets the orientation. A corner sofa is described as left hand or right hand facing, based on where the longer or chaise section sits when you are looking at the sofa from the front. Check how each retailer defines this, since conventions can vary, and sketch the layout so you know which side the return falls on.

Step Two: Measure Both Walls

Measure the full length of each wall from the corner outwards. Note where doors, radiators, alcoves and window bays begin and end along each wall. Many period homes have walls that are not quite square, so measure at floor level and again at about seat height to check for any difference.

Record the distance from the corner to the first obstruction on each wall. These two figures are your maximum sofa lengths. If a door opens inwards near the corner, measure its full swing and treat that arc as unusable space.

Step Three: Allow for Walkways and Clearance

A sofa that fits wall to wall can still make a room feel cramped. As a general guide, allow around 75 to 90 cm for main walkways and at least 45 cm between the sofa front and a coffee table. If the sofa faces a television, leave a comfortable viewing distance and make sure the screen is not partly hidden by the sofa arm.

Leave a small gap of a few centimetres between the back of the sofa and the wall. This helps air circulate, protects the fabric from rubbing and makes cleaning easier. If a radiator sits behind the sofa, leave more space so heat can circulate into the room.

Step Four: Understand the Sofa Measurements

Corner sofa listings usually include several dimensions, and it helps to know what each one means.

Overall Width

The longest side of the sofa from arm to arm. This must fit along your main wall with room to spare.

Return Length

The length of the shorter side, measured from the outside corner to the end of the arm. This must fit along your second wall.

Overall Depth

The distance from the back of the sofa to the front of the seat on one side. This affects how far the sofa projects into the room.

Seat Depth and Seat Height

Seat depth is the usable sitting area from the front edge to the back cushion. Seat height is the distance from the floor to the top of the seat cushion. These affect comfort rather than fit, but they are worth comparing with a sofa you already find comfortable.

Back Height

Important if the sofa sits beneath a window. Check that the back will clear the sill and that curtains or blinds can still open and close.

Step Five: Tape the Footprint on the Floor

This is the step most people skip, and it is the one that prevents regret. Using masking tape, mark the full outline of the sofa on the floor, including the corner section and any chaise. Then live with it for a day or two.

Walk around the outline, open the doors, draw the curtains and place your coffee table where it will go. You will quickly notice whether the walkway is comfortable and whether the sofa feels in proportion to the room. This is far more reliable than looking at numbers on a page.

Step Six: Measure the Delivery Route

A corner sofa that fits the room is no use if it cannot get there. Measure every point on the route from the front door to the living room.

• Width and height of each doorway, measured inside the frame.
• Width of hallways, especially where they turn.
• Width and height of staircases, including headroom at any landing.
• Any tight turns, newel posts, radiators or light fittings along the way.

Compare these with the dimensions of the largest individual section, not the assembled sofa. Most corner sofas arrive in two or more parts that join together in the room. Check the product details for packaged section sizes, and note whether feet or back cushions can be removed to reduce height.

Flats deserve extra care. Lifts, communal stairwells and fire doors can all be narrower than you expect, so measure these too.

Step Seven: Plan the Surrounding Furniture

Once you know the sofa will fit, plan the pieces around it. A corner sofa creates a natural seating zone, and a coffee table at the centre brings it together. Choose a table that sits within comfortable reach of both sides. Rectangular tables suit longer sofas, while round or square tables work well when both sides are similar in length. Our modern coffee tables UK range includes shapes and sizes to suit most corner arrangements.

A rug anchors the arrangement further. Ideally, the front legs of both sides of the sofa should rest on the rug, which ties the seating together visually. Our modern rugs UK sale selection includes larger sizes that work well beneath corner sofas.

Common Measuring Mistakes

• Measuring the room but not the delivery route.
• Forgetting skirting boards, which can reduce the usable wall length slightly.
• Ignoring the swing of doors and the depth of radiators.
• Choosing the wrong hand orientation for the chaise or return.
• Assuming walls in older properties are truly square.

Reading More Before You Buy

If you are buying online, our guide to buying a corner sofa set online in the UK covers frame quality, fabric and configuration in more depth. For ideas on what to place in front of your new sofa, our article on coordinating corner sofas and coffee tables in UK homes looks at scale, shape and material pairings.

When your measurements are ready, you can compare corner sofas by size and fabric at Furniture in Fashion, with free delivery to most UK mainland postcodes.

Special Cases Worth Checking

Bay Windows

A bay window can sit right where you would like the corner sofa to go. In this case, measure the straight wall either side of the bay rather than the bay itself, and consider whether the sofa should face into the bay instead. A low backed corner sofa positioned in front of a bay can keep the view open and make the window a natural focal point.

Chimney Breasts and Alcoves

In many Victorian and Edwardian homes, the chimney breast projects into the room and leaves alcoves on either side. A corner sofa rarely fits into the alcove itself, so plan it against the opposite walls and use the alcoves for shelving or storage. Measure from the face of the chimney breast, not the back wall of the alcove.

Floating Layouts

If the corner sofa will float in an open plan room rather than sit against walls, measure the clear floor zone you want the seating area to occupy. Allow walkways on all exposed sides, and remember that the back of the sofa will be on view, so choose a design that is fully upholstered at the rear.

Frequently Asked Questions

How much space should I leave around a corner sofa?

As a general guide, allow around 75 to 90 cm for main walkways and at least 45 cm between the sofa and a coffee table. Leave a few centimetres between the sofa back and the wall.

How do I know if a corner sofa will fit through my door?

Measure the width and height of each doorway inside the frame, then compare these with the dimensions of the largest individual sofa section. Remember to check hallways and stairs as well.

What is the difference between left and right hand corner sofas?

It refers to which side the longer section or chaise sits on. Definitions can vary between retailers, so check the product description and sketch your layout before ordering.

Should a corner sofa touch both walls?

Not necessarily. A small gap behind the sofa is helpful, and in open plan rooms a corner sofa can float away from the walls to define a seating zone.