Sofa cushions range in size from 17" x 20" to 24" x 24". A quick look at this size guide shows that the best pillow sizes for furniture range from 20" by 20" to 24" by 24" if you choose square pillows. The ideal cushion size for a sectional sofa can range from 18" x 18" to 22" x 22".
A typical sofa may have square cushions measuring 20" by 20" or even 22" by 22". For sectional sofas, place the 2 largest cushions (22" or 24" square cushions) on the sides.
If you have a sofa with a low back, add 5 inches to the inside height to calculate the optimal size for the largest cushion. As I said, determine the original size of the cushion depending on the depth of your sofa, but never make the back cushion less than 20.
For a smaller sofa, such as a two-seat chair, put in the effort as if you were painting a full size sofa, just be sure to resize the cushion accordingly. If you have a smaller sofa, such as a 2-seater sofa or chair for two, you can still use 20" x 20" pillows. In the example above from Houzz, the pillows are the right size for the sofa: not too big and not too small. Pillows come in a variety of sizes, and choosing a specific size can be difficult if you don't know how to properly measure your pillow.
Here we give you an idea of pillow sizes and how to measure them so you can find the right choice that enhances the overall look of your space. We will also discuss how to know which cushion size to choose for your particular sofa. While choosing the right fabric for your pillow is critical, choosing the right size, pillow insert, and location is just as important.
The perceived size of a pillow decreases when it is stuffed, so keep this size explanation in mind when choosing pillows for sofas, chairs, or beds. My pillow size in this photo doesn't necessarily represent the largest and smallest pillow from back to front, but the measurements I've written will help you the most.
My favorite size for sofas is the smaller size paired with square cushions. As for the height, it is better not to allow large pillows to exceed the height of the back of the sofa.
I love deeper sofas, so I always use larger back cushions, like 24 or even 26 sometimes if I really need cushion placement, but the most common larger size is 24. For a sofa, I usually use two 22 (22) cushions. pillowcases + 24 liners) at the ends with two 20 pillows in front. The standard size for a two-seat seat is about 70 inches wide, so for one part of this scale, look for two 20-inch cushions and two 18-inch cushions, one of each size at each end.