The size that suits most Indian three-seater sofas is 16x16 inches (40x40 cm). If you want one number and nothing else, that is the number. But the size on the label is only half the decision. The other half is how full the cushion looks once it is filled, and that comes down to a single rule most shops never mention: buy the cover about an inch smaller than the insert you put inside it. Get that pairing right and the cushion looks plump and deliberate. Get it wrong and even a good cover sags in the middle by the second week.
So this guide does two things. It maps each common size to the seat it actually suits, and it explains the snug-fit rule so your cushions hold their shape long after you have stopped noticing them.
The four sizes you will actually see
Indian home-textile brands sell cushion covers in a tight set of sizes, and Encasa XO is no different: 30x30, 40x40, 50x50 and 60x60 cm, which is 12, 16, 20 and 24 inches. Everything else is a variation on these, and each one has a job.
The 16-inch cover is the workhorse. On a typical three-seater with a seat depth around 55 to 60 cm, a 40 cm cushion sits upright against the backrest without swallowing the seat, and you can line up three of them or run two-and-a-throw without the sofa looking crowded. If you are buying blind for a sofa you cannot measure, this is the safe pick.
Go up to 20 inches when the sofa is deep or oversized, the kind you sink into, where a 16-inch cushion looks lost against the back. Drop to 12 inches for armchairs, reading chairs and as the small front cushion in a layered arrangement. The 24-inch is a different animal: too big to prop upright comfortably on most sofas, it earns its place as a floor cushion or a large back cushion on a daybed.
If you want to see the range in one place, the full cushion cover collection lists every size against each design, and the velvet range (like these green velvet covers) is where the 16-inch size does most of its work in Indian living rooms.
Cushion cover size chart
| Cover size | Metric | Insert to use | Works best on |
|---|---|---|---|
| 12 inch | 30x30 cm | 13-14 inch | Armchairs, accent and front-layer cushions |
| 16 inch | 40x40 cm | 17-18 inch | Standard three-seater and two-seater sofas |
| 20 inch | 50x50 cm | 21-22 inch | Deep, oversized or sectional sofas |
| 24 inch | 60x60 cm | 25-26 inch | Floor cushions, daybeds, large back cushions |
The middle column is the part that changes how your cushions look, so it is worth its own explanation.
Why the cover should be smaller than the insert
Almost everyone makes the same mistake here: they buy a 16-inch cover and a 16-inch insert, assuming matching numbers mean a good fit. What they get is a cushion with soft, empty corners and a dip in the centre, because the filling has exactly enough room to spread out and go slack.
An insert an inch or two larger than the cover fixes this completely. The filling is gently compressed, so it pushes into the corners and stays domed in the middle. The cover looks tailored rather than baggy, and it holds that shape through daily use instead of flattening within a fortnight.
There is a limit, of course. Push it too far, force a 20-inch insert into a 16-inch cover, and the zip strains and the seams take the stress every time someone leans back. An inch or two is the sweet spot. If your inserts are old and have gone limp, this is also the cheapest fix in the house: a fresh, slightly oversized insert behind a cover you already own brings a tired cushion back to life.
Does the fabric change the size I should buy?
Not the size, but the impression. A thick, textured fabric like corduroy or chenille reads as slightly larger and firmer than a smooth cotton of the same dimensions, because the pile adds visual bulk. Velvet does something similar and also catches light, which makes a filled cushion look rounder. None of this means you size up or down. It means that if you are mixing fabrics on one sofa, a set of 16-inch velvet covers will look a touch more substantial next to 16-inch printed cotton, and you can use that to your advantage rather than fighting it.
How many cushions, and in what sizes?
A three-seater looks balanced with three to five cushions, and mixing two sizes is what stops the row looking like a showroom. A common, easy setup: two 20-inch cushions at the outer corners, two 16-inch in front of them, and one 12-inch or a lumbar cushion in the centre. On a two-seater, drop to two 16-inch and one smaller accent. The point is layers of slightly different depth, so the eye has something to travel across.
Frequently asked questions
What is the most common cushion cover size in India?
16x16 inches, or 40x40 cm, is the default for sofa cushions sold in India. It suits the seat depth of most three-seater and two-seater sofas, which is why brands stock the widest choice of designs in this size.
Should the cushion insert be bigger than the cover?
Yes. An insert one to two inches larger than the cover fills the corners and keeps the cushion domed rather than flat. A same-size insert leaves the cover looking baggy and lets it sag within a couple of weeks.
Can I put a 16-inch cover on a 20-inch cushion?
You can, but it is too much of a stretch. The zip and seams take the strain and the cover wears out faster. Keep the difference to an inch or two; a 16-inch cover suits a 17 or 18-inch insert.
What size cushions for a deep sofa?
For a deep or oversized sofa where a 16-inch cushion looks small against the backrest, move up to 20 inches (50x50 cm) as the main size, and layer a 16-inch in front for depth.
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