SOFA (centimeter):

Single: length: 80-95, depth: 85-90; Cushion height: 35-42; Back height: 70-90 

Double: length: 126-150; Depth: 80-90

Three person: length: 175-196; Depth: 80-90

Four person: length: 232-252; Depth 80-90

Sofa is upholstered most of the time. The final dimension of a sofa is really affected by the design and material, also the human weight. For example, the density and thickness of different foams can lead to different height of the seat; the depth of a sofa with cushions can be larger than a sofa without cushions; the height of the seat can also be different due to various purposes and functions.

If you are a beginner and not familiar with the actual size of a sofa, I highly recommend you to visit some furniture brands websites, find some products that are similar to your design concept, check the dimension of that product as a reference to give yourself a general idea. Besides, a full-scaled cardboard mock up can always help you figure out the size instantly. 


  1. National Standard Size of Furniture, new edition, 2016.


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