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Sofa Dimensions for 2, 3, 4 and 5 People (Charts)

Here's a set of 4 charts that illustrate the proper sofa dimensions for 2, 3, 4 and 5 people. When you need a couch big enough for a certain number of people, this is a great brief article and set of diagrams to check out.
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Nice living room with sofa

How many people does a sofa accommodate? It’s an important question when buying a couch. Of course, it varies whether it’s kids vs. adults, but there are standard dimensions for sofas that accommodate 2, 3, 4 or 5 people.

Below we set out a series of charts and illustrations that show you the proper dimensions of couch depending on how many people you want to accommodate.

Key dimensions:

The main dimension you need to concern yourself with when choosing a sofa by how many people can sit in it is the width of the seating area.

  • 2-person sofa: 50″ seating width (does not include width of the arms).
  • 3-person sofa: 78″ seating width (not including arms).
  • 4-person sofa: 90″ seating width (not including sofa arms).
  • 5-person sofa: 108″ seating width (not including couch arms).

A. Sofa Dimensions for 2 People

Detailed chart setting out all the many dimensions of a two-seater sofa.

Chart showing sofa dimensions for 2 people

B. Sofa Dimensions for 3 People

Detailed diagram setting out all the key dimensions of a sofa for 3 people.

Diagram showing sofa dimensions for 3 people

C. Sofa Dimensions for 4 People

Detailed illustration showing the important sofa dimensions to seat up to four people.

Sofa dimensions for 4 people (chart)

D. Sofa Dimensions for 5 People

Our final custom diagram that explains the dimensions of a sofa that seats up to five people.

Sofa dimensions for 5 people (custom chart)









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