---
title: "Corner Floor Cushion Size: Measure the Two Wall Sides"
url: "https://cushionguide.com/answers/corner-floor-cushion-measurements-wall-sides/"
section: "The Cutting Table"
author: "Callum Reid, The Weather Man of Casco Bay"
author_url: "https://cushionguide.com/masters/callum/"
published: "2026-08-26"
updated: "2026-08-26"
keywords: "corner floor cushion size, how to measure corner floor cushion, quarter circle floor cushion, triangle corner cushion size, corner reading nook cushion"
---

# How do you measure for a corner floor cushion?

*Two walls, one corner, two numbers. Everything else about a corner cushion follows from those.*

Also asked as: How are you measuring the corner cushion?; It says 32 by 32, but it's a triangle.

> **The quick answer:** A corner floor cushion is measured by its two straight sides, the ones that sit against the walls and meet at the 90-degree corner. Measure along each wall from the back corner to where the cushion should end, so 48 x 48 in means 48 in (122 cm) on each wall. Don't measure diagonally, and skip the curved front edge.

![Mustard yellow corner floor cushion with forest green backrest pillows under a botanical print beside a walnut cabinet](https://cushionguide.com/media/corner-floor-cushions/mustard-forest-green-corner-floor-cushion-study-nook-1600.webp "Mustard and forest green, a pairing borrowed from 1960s interiors, turn a plain corner into a warm study nook.")

## Key facts

- Corner cushion size is the two straight sides along the walls.
- Measure along each wall from the back corner to where the cushion should end.
- Don't measure diagonally from the back corner to the front.
- The curved edge doesn't need measuring; on a 48 x 48 in (122 x 122 cm) quarter circle it runs about 75.4 in (191.5 cm).
- The pictured corner set is 48 x 48 in; the default corner floor cushion is 34 x 34 in (86 x 86 cm).
- On a triangle corner cushion, 32 x 32 in (81 x 81 cm) means the two sides forming the right angle.
- Three-sided corners need a photo and the depth measured in the middle, and are quoted separately.

## Measuring a two-wall corner

1. **Start in the back corner**: Hook the tape where the two walls meet. That point is zero for both sides.
2. **Run along the first wall**: Stop where you want the cushion to end. Write the number down.
3. **Run along the second wall**: Same start, same corner. 39 x 39 in means 39 in (99 cm) on each wall, an L on the floor.
4. **Leave the front edge alone**: No diagonal, no curve. The shape follows from the two wall sides.

## Why the curve takes care of itself

Sailmakers learn this early: fix the two edges you can reach and the free edge follows. A quarter-circle [corner floor cushion](https://cushionguide.com/cushions/corner-floor-cushions/) works the same way. Each wall side is the radius, so a 48 x 48 in cushion has a curved edge of about 75.4 in (191.5 cm) without you ever bending a tape around it.

Triangles follow the same rule. On a 32 x 32 in triangle, those are the two sides forming the right angle; the long diagonal front edge isn't one of the listed numbers. See [diagonal measurement](https://cushionguide.com/glossary/#diagonal-measurement) if the word keeps tripping you up.

The set in the photos is 48 x 48 in. The default is 34 x 34 in. Which corner are you filling, friend? The [quarter-circle sizing Pattern](https://cushionguide.com/guides/corner-floor-cushion-quarter-circle-size/) has the full table.

## Three corner shapes, one rule

| Shape | What the size means | What you skip |
|---|---|---|
| Quarter circle, 48 x 48 in | Each wall side is 48 in (122 cm) | The curved edge, about 75.4 in (191.5 cm) |
| Right triangle, 32 x 32 in | The two sides forming the right angle | The long diagonal front edge |
| Three-sided corner, such as a corner window | Each side, plus the depth taken exactly in the middle | Nothing: send a photo with the numbers written on it |

> **Tailor's margin:** Measure a corner floor cushion wall by wall from the back corner; a tape run diagonally to the front edge gives a number the workshop never uses.

> Corner floor cushion size means the two wall sides: 48 x 48 in is 48 in along each wall, and the curved edge takes care of itself.
>
> — Callum

## Buyer questions

**A common question:** Do I measure the corner floor cushion from wall to wall?

**The workshop's answer:** Yes. Measure from the back corner along each wall to where the cushion should end. 39 x 39 in means each wall side is 39 in long, forming an L. Don't measure diagonally from the back corner to the front.

**A common question:** The triangle corner cushion says 32 x 32 in. Which sides are those?

**The workshop's answer:** The two straight sides that meet at the right angle, the base and the height. The long diagonal front edge isn't one of the listed numbers, and the shop can send a drawing if the shape is unclear.

**A common question:** How long is the curved edge on the quarter-circle cushion?

**The workshop's answer:** The size is the two straight sides against the walls, for example 48 x 48 in, and on that size the curved outer edge is about 75.4 in. For an unusual space, send a photo and draw the sizes on paper.

**A common question:** What size is the corner set in the photos?

**The workshop's answer:** The large corner set pictured is 48 x 48 in; the default corner floor cushion is 34 x 34 in. Measure the length of each wall the cushion will sit against.

**A common question:** How close to my size will a handmade cushion come out?

**The workshop's answer:** Handmade cushions can vary by about 1 in (2-3 cm) from the ordered size. If a dimension is a hard maximum, say so and the cushion is kept under that limit.

## Questions buyers ask next

### What if my corner has three sides, like a corner window?

Send a photo with the measurements marked on it, including the depth taken exactly in the middle. A three-sided corner is cut to the shape of your space, needs special cutting and is quoted separately from the standard sizes.

### Will the workshop confirm the shape before cutting?

Yes. When a shape is unclear, the shop offers a drawing or diagram of your dimensions, and the cushion is made to the approved layout. It builds to your numbers rather than choosing the final size for you.

### Is a listed corner size the cushion or the space around it?

The cushion itself. Listed sizes describe the finished cushion, not the corner it sits in, so measure along each wall only as far as you want the cushion to reach, not the full length of the wall.

### Why is my corner cushion not sitting flush against the walls?

Usually the baseboards. A cushion measured along the floor meets the baseboard molding before the wall, so it sits out by the molding's depth, and a corner that isn't square opens a gap at one end. Measure along both walls from the back corner, note the baseboard depth, and check the corner angle with a full-size paper outline before ordering.

## Related at the atelier

- [Corner floor cushion sizes: reading the quarter circle](https://cushionguide.com/guides/corner-floor-cushion-quarter-circle-size/): A corner floor cushion is sized by its two straight sides, the ones that sit against the walls, so 48 x 48 in means 48 in along each wall from the back corner.
- [Two-Tone Corner Floor Cushion for a Reading Nook, Self-Piped](https://cushionguide.com/readings/red-charcoal-two-tone-corner-floor-cushion-reading-nook/): For a two-color corner floor cushion, self piping is usually the right call: each piece keeps its own clean outline, while a third color on the edges would break up the red seat and charcoal backrest.
- [Corner floor cushion in periwinkle and rust stripe for a hallway](https://cushionguide.com/readings/periwinkle-rust-stripe-corner-floor-cushion-hallway/): A corner floor cushion fits a hallway corner where a bench would block the path, and a thick one keeps you off cold stone or tile.
- [Corner Floor Cushion in Ivory Corduroy for a Toddler Play Nook](https://cushionguide.com/readings/ivory-corduroy-corner-cushion-toddlers-playing/): A corner floor cushion for toddlers should have a firm box edge and a low front, so children can perch on the rim and climb on and off by themselves.
- [Is the corner floor cushion a quarter circle, and what does the size measure?](https://cushionguide.com/answers/corner-floor-cushion-quarter-circle-size/): The corner floor cushion is a quarter circle, and its listed size is the length of the two straight edges, the radius, not the curved front.
- [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).
- [Floor seating for real evenings: cushions, corner seats and low sofas](https://cushionguide.com/guides/floor-seating-ideas/)

*Fair winds — Callum*

---

Written by Callum Reid (https://cushionguide.com/masters/callum/) 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-measurements-wall-sides/