Sofa Dimensions for 2, 3, 4 and 5 Person Couches (Charts & Diagrams)

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.

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.

Sofa dimensions overview:

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).
Sofa seat height: 18″ (this can vary but 18″ is a common height for the sofa seat).
Sofa seat depth: 24″ to 28″ approximately.
Sofa back height: Varies tremendously on sofa style.
Total sofa width: Again, it varies depending on the width of the arms.