
Selecting the right pillow size for your couch is a key step in achieving a well-proportioned and stylish look. The ideal dimensions are primarily determined by the size and style of your sofa, including its depth and back height.
For a regular-sized sofa, the most common and effective square pillow sizes are 20x20 and 22x22 inches. These provide a substantial look without overwhelming the seating space. If you are adding a rectangular lumbar pillow to the arrangement, sizes in the range of 11 to 14 inches high by 19 to 20 inches wide are recommended.
If you have a large or deep-seated sofa, you can accommodate larger pillows to maintain a balanced scale. Square pillows measuring 20x20, 22x22, and even 24x24 inches work well. For sectional sofas, a versatile mix of 18x18, 20x20, and 22x22 inch pillows is a suitable choice.
Conversely, for smaller sofas, settees, or couches with low backs, it is best to scale down the pillows to avoid a cluttered appearance. In this case, smaller square pillows are more appropriate, with recommended sizes including 17x17, 18x18, and 20x20 inches.


