How to Measure a Couch for a Corner Space

Got a corner that needs a sofa but not sure what size will work? Measuring the space correctly is the first step to a comfy, well‑fitting couch. Follow these easy steps and you’ll avoid costly mistakes.

1. Sketch the Corner and Note Key Measurements

Grab a piece of paper or use a phone app to draw a quick diagram of the corner. Mark the two walls that meet and label the length of each wall from the corner outwards. Measure from the floor to the ceiling if you plan a tall sofa or a sectional with a back that reaches the ceiling.

Measure three things:

• Wall A length – distance from the corner along the first wall.
• Wall B length – distance from the corner along the second wall.
• Depth – how far the couch will extend into the room.

Write these numbers down. They are the limits you’ll work within.

2. Choose the Right Sofa Style for the Space

Corner sofas come in L‑shapes, U‑shapes, and modular pieces. An L‑shape fits most standard corners because it uses two arms and a seat that slides into the corner. A U‑shape needs more room, so only consider it if both walls are long enough.

Once you know the style, use these rules:

• For an L‑shape, the longer arm should be no more than 10‑15% shorter than the longer wall.
• The shorter arm should be at least 5‑10% shorter than the shorter wall to leave breathing room.
• Leave at least 2‑3 inches of clearance between the sofa and any adjoining furniture or doors.

These guidelines keep the sofa from feeling cramped and make traffic flow smoother.

Now, calculate the actual dimensions. If Wall A is 120 cm, aim for the longer arm around 105 cm. If Wall B is 90 cm, the shorter arm should be about 80 cm. Add a cushion depth of 20‑25 cm—this is the distance the seat will stick out into the room.

Don’t forget to measure doorways and hallways if you need to bring the couch inside. Measure the width, height, and any tight turns. Write the largest dimension of the sofa and compare it to your passage widths.

With the sketch, the three key numbers, and the style rules, you can now talk to a retailer or use an online config tool. Most sellers let you input your wall lengths and will suggest models that fit.

Finally, double‑check everything before you order. A quick re‑measure of the walls and a mental walk through the room will catch any oversight.

Measuring a couch for a corner isn’t rocket science—just a few simple steps and a bit of planning. Follow this guide, and you’ll end up with a sofa that looks great and feels just right.