---
title: "Corner Floor Cushion Size: 40 or 48 in Sides, 4 to 12 in Thick"
url: "https://cushionguide.com/answers/corner-floor-cushion-sizes-and-thickness/"
section: "The Cutting Table"
author: "Harlan Pruitt, The Elder of High Point"
author_url: "https://cushionguide.com/masters/harlan/"
published: "2026-04-23"
updated: "2026-09-24"
keywords: "corner floor cushion size, corner nook floor cushion, kids corner floor sofa size, quarter circle floor cushion thickness, tufted corner floor cushion"
---

# What size corner floor cushion should I get, and can it be bigger or thicker?

*A corner cushion is measured along its two straight sides, the way you'd measure a slice of pie from the point. Get those sides right and the rest follows.*

Also asked as: What size would you recommend for our corner?; 39 x 39 in (1 x 1 m) will be too large for our space

> **The quick answer:** Choose a corner floor cushion by the length of its two straight sides: 40 x 40 in (102 x 102 cm) suits two toddlers around 3, and 48 x 48 in (122 x 122 cm) makes a roomier nook. Tufted versions are 4 in (10 cm) thick by default, with 5 in, 6 in or more to order; plush and kids' corner versions run 8 in (20 cm).

![Beige gingham corner floor cushion with two backrest pillows in a wainscoted corner with bookshelf, lamp and vintage rug](https://cushionguide.com/media/corner-floor-cushions/beige-gingham-corner-floor-pouf-reading-corner-1600.webp "A quarter-round floor seat with two flanged backrest pillows, fitted into an empty corner to make an instant reading spot.")

## Key facts

- Corner floor cushions are sized and priced by the length of their two straight sides, called the radius.
- A 48 in (122 cm) radius is ordered by choosing 48 x 48 in.
- 40 x 40 in (102 x 102 cm) is suggested for two toddlers around 3 years old.
- The best-selling kids' corner floor sofa is about 39 x 39 x 8 in (100 x 100 x 20 cm); smaller sizes such as 31.5 x 31.5 in (80 x 80 cm) are possible.
- The tufted corner cushion is 4 in (10 cm) thick by default, with 5 in and 6 in options; 10-12 in (25-30 cm) was quoted on a 60 in (152 cm) cushion.
- The plush corner cushion is 8 in (20 cm) thick.
- Price rises with each size and thickness step; custom sizes are quoted individually.

## Corner floor cushion sizes from past orders

| Version | Sides | Thickness | Notes |
|---|---|---|---|
| Tufted corner cushion, emerald green (listing photo) | 40 x 40 in (102 x 102 cm) | 4 in (10 cm) standard | Suggested for two toddlers around 3 |
| Tufted corner cushion, smoke gray (listing photo) | 46 x 46 in (117 x 117 cm) | 4 in; 5 in (13 cm) or 6 in (15 cm) to order | Each thicker step costs more |
| Tufted corner cushion, 48 in radius | 48 x 48 in (122 x 122 cm) | 4 in (10 cm) standard | Order it by choosing 48 x 48 in |
| Large tufted corner cushion | 60 in (152 cm) | 10-12 in (25-30 cm) | Quoted individually |
| Kids' corner floor sofa, best-seller | 39 x 39 in (100 x 100 cm) | 8 in (20 cm) | Smaller, such as 31.5 in (80 cm), can be made |
| Plush corner cushion | Per order | 8 in (20 cm) | Thickness set by the version |

## Why the sides are called the radius

A corner floor cushion is a quarter circle. Its two straight sides run along the walls and meet in the corner, and the round edge faces the room. Those straight sides are what we measure, and in the trade that length is the radius.

So when you want a 48 in (122 cm) radius, you choose 48 x 48 in. Size and price both follow the sides. Each step up in size, and each step up in thickness, costs more, and anything custom is quoted on its own.

Photos fool the eye, my friend. One buyer was sure the listing showed 36 in and 48 in cushions; they were 46 x 46 in (117 x 117 cm) in smoke gray and 40 x 40 in (102 x 102 cm) in emerald green. Mark the size on your floor with tape before you trust any picture, as the beige [gingham](https://cushionguide.com/fabrics/checked-linen-and-gingham/) one in our reading corner was.

The [kids' floor sofas](https://cushionguide.com/cushions/kids-floor-sofas/) and [corner floor cushions](https://cushionguide.com/cushions/corner-floor-cushions/) show the whole family. The [quarter-circle sizing Pattern](https://cushionguide.com/guides/corner-floor-cushion-quarter-circle-size/) walks through the tape, and the [floor cushion thickness Pattern](https://cushionguide.com/guides/floor-cushion-thickness-guide/) helps with depth. Buy the cushion once, cry once. Who will be sitting in your corner?

## Before you settle on a side length

- ✓ Mark the size on the floor with tape, out from the corner along both walls.
- ✓ Two toddlers around 3 years old: 40 x 40 in (102 x 102 cm).
- ✓ Room too tight for 39 x 39 in (100 x 100 cm)? 31.5 x 31.5 in (80 x 80 cm) can be made.
- ✓ For a grown-up reading corner, the largest 48 x 48 in (122 x 122 cm).
- ✓ Want a deeper sit on the tufted version? Ask for 5 in or 6 in instead of the standard 4 in.
- ✓ Custom sizes and thicknesses are quoted one by one, and the price follows both.

> **Tailor's margin:** A corner floor cushion is sized by its two straight sides: 40 x 40 in fits two toddlers around 3, and 48 x 48 in makes a grown-up reading nook.

> Corner floor cushions are measured along their two straight sides, not the curve, and the tufted ones are built 4 in thick unless you ask for more.
>
> — Harlan

## Buyer questions

**A common question:** What size kids' corner floor sofa should I get? Can it be smaller than 39 x 39 in (1 x 1 m)?

**The workshop's answer:** It depends on your space. The best-selling size is about 39 x 39 x 8 in (100 x 100 x 20 cm), and smaller custom sizes such as 31.5 x 31.5 in (80 x 80 cm) can be made.

**A common question:** How is a corner nook cushion priced, and which size fits two toddlers?

**The workshop's answer:** Corner nook cushions are priced by radius, 40 in or 48 in, and you order the 48 in radius by choosing 48 x 48 in. For two 3-year-olds the workshop suggested 40 x 40 in (102 x 102 cm).

**A common question:** What sizes are the corner floor cushions in your photos?

**The workshop's answer:** The smoke-gray one is 46 x 46 in (117 x 117 cm) and the emerald green one is 40 x 40 in (102 x 102 cm). A 60 in (152 cm) cushion made 10-12 in (25-30 cm) thick was also quoted, individually.

**A common question:** Can the corner floor cushion be made bigger and thicker?

**The workshop's answer:** Yes. The default is 4 in (10 cm). With 46 in (117 cm) sides it was quoted at 5 in (13 cm) and at 6 in (15 cm), each thickness step raising the price.

**A common question:** Can you make a floor cushion to fit a particular spot, like a kids' play tent?

**The workshop's answer:** Yes. Send your measurements and the workshop quotes a made-to-fit cushion, such as 30 x 30 in (76 x 76 cm) for a play tent or 40 x 48 in (102 x 122 cm) for standard pallets. Ask for the current production time in writing with that quote, my friend.

## Questions buyers ask next

### Is a corner floor cushion measured along the curve or the straight sides?

Along the two straight sides that meet in the corner. That length, called the radius, sets both the size and the price. A 48 in (122 cm) radius is ordered as 48 x 48 in, and the curved front edge follows from it.

### Which corner cushions are thicker than 4 inches as standard?

The plush corner cushion and the kids' corner floor sofa are both 8 in (20 cm) thick as made. The tufted corner cushion starts at 4 in (10 cm) and can be ordered at 5 in or 6 in, or quoted thicker on large sizes.

### How do I check a size in my room before ordering?

Mark it on the floor. Run tape out from the corner along both walls to the side length you are weighing, then sit inside the lines with whoever will use it. Trust the tape over the listing photos, which show 46 in and 40 in sides.

## Related at the atelier

- [What sizes does the corner floor cushion come in, and how big can it go?](https://cushionguide.com/answers/corner-floor-cushion-sizes/): The corner floor cushion comes in three standard sizes, all 7.9 in (20 cm) thick: about 32 x 32 in (80 x 80 cm), 39.5 x 39.5 in (100 x 100 cm) and 47 x 47 in (120 x 120 cm).
- [Can the corner floor cushion be made in a custom or in-between size?](https://cushionguide.com/answers/custom-size-corner-floor-cushion/): A corner floor cushion can be made in an in-between size: order the next standard size up and write your exact size in the note, such as 43.5 x 43.5 in (110 x 110 cm) under the 47 x 47 in (120 x 120…
- [Kids Floor Sofa in Oat Corduroy: Where to Spend, Where to Save](https://cushionguide.com/readings/oat-corduroy-kids-floor-sofa-bunny-shelf/): On a kids floor sofa, spend on the foam and the size, and save on the extras.
- [Kids Floor Sofa Arches in Tonal Corduroy: Edges and Depth](https://cushionguide.com/readings/tonal-brown-corduroy-nesting-arch-window-side/): For a kids floor sofa or nesting play arch, a box edge with a sewn gusset gives every curve the same depth, so each piece stands steady and nests without wobbling.
- [Kids Floor Sofa Colors: Chocolate, Cream and Charcoal Corduroy](https://cushionguide.com/readings/chocolate-cream-charcoal-corduroy-rainbow-stacker/): A kids floor sofa or play stacker can borrow three habits from outdoor cushions: dark tones on the most-handled surfaces, removable covers, and pieces that stack away.
- [What size kids' floor sofa or play bed should I get for a toddler?](https://cushionguide.com/answers/kids-floor-sofa-size-toddler/): For a 2-year-old, a 24 x 50 in (61 x 127 cm) kids floor sofa works well if you have the space.
- [Kids' play couch sizes: choosing a floor sofa by age and room](https://cushionguide.com/guides/kids-floor-sofa-size-by-age/)
- [How to find cushions without added flame-retardant chemicals](https://cushionguide.com/guides/flame-retardant-free-cushions/)

*Sit well. — Harlan*

---

Written by Harlan Pruitt (https://cushionguide.com/masters/harlan/) for CushionGuide (https://cushionguide.com/about/). The site explains made-to-measure cushions and the partner workshop makes them; measurements are in inches first. This Markdown mirrors the page at https://cushionguide.com/answers/corner-floor-cushion-sizes-and-thickness/