That is a matter of opinion and design.
Different throw pillow sizes.
The most common sizes of pillows for sofas are 18 x18 and 20 20.
Usually you can place two queen sized pillows at the head of a queen sized bed.
It will fit snugly in a pillowcase of a standard size.
However if you have sectionals with high backs and deep seats or larger sofas you may need to buy larger throw pillows that measure 22 by 22 inches and 24 by 24 inches.
Some designers even go up to 24 squares depending on the size of the sofa or chair.
If they order pillows based on this measurement the chances are they will be surprised to find that the pillows they receive are actually much smaller than they wanted.
There is no standard size for accent pillows used to enhance décor.
Sofa types we cover.
A queen pillow is normally sized 20 x 30.
Many interior designers agree that certain sizes of throw pillows work best for certain situations even though there are a wide variety of styles and sizes of decorative pillows.
However larger sofas and sectionals especially those with deep seats or high backs may be better off with 22 x 22 or even 24 x 24 pillows.
Regular sofas small sofas settees loveseats long and deep sofas sectionals.
For kids spaces smaller pillows are often used.
All you need is four decorative throw pillows in two slightly different sizes.
If you re up to the task of sewing your own pillows you might want to consider opting for 20 22 size as it s a bit more of a luxe designer look.
For instance two solid colors and two patterns that go nicely together.
My personal size preference is 22 square.
So if you have 20 square pillow covers use 22 square inserts.
Size up on your pillow inserts use pillow inserts that are 2 larger than the size of your pillow covers.
Choosing a standard size pillowcase will increase a queen pillow s firmness.
Let s say you decide to choose two 18 inch square pillows and two 16 inch square pillows.
A no fail design guide to choosing the right decorative pillow sizes for your particular type of sofa so you can avoid costly mistakes.
Common throw pillow sizes the most common throw pillow sizes for sofas are 18 x 18 and 20 x 20.
It also helps if the pillows have different looks.