---
title: "Window Seat Cushion for a Deep Reveal: How to Measure It"
url: "https://cushionguide.com/readings/chocolate-tweed-window-seat-cushion-linen-curtains/"
section: "Readings"
author: "Rosa Delgado, The Porch Keeper of Savannah"
author_url: "https://cushionguide.com/masters/rosa/"
published: "2026-02-03"
updated: "2026-09-24"
keywords: "window seat cushion, custom window seat cushion, linen bench cushion, reading nook cushion, made to measure cushion, bench cushion indoor"
---

# A chocolate window seat cushion, measured wall to wall

*A letter about a dark seat in a bright window, and the four numbers I would take before anybody cuts a thing.*

> **The quick answer:** To measure a window seat cushion that runs wall to wall, take the length at the back and at the front, the depth from the window wall to the front edge, and the seat height. If the two lengths differ, send both, because the cushion may be a trapezoid. For a very long run, ask whether it comes in one piece.

![Chocolate brown tweed-look window seat cushion, self piped, two ivory pillows, framed by linen curtains and a leafy view](https://cushionguide.com/media/window-seat-cushions/chocolate-tweed-window-seat-cushion-linen-curtains-1600.webp "A dark brown tweed-look cushion anchors a white window seat framed by linen curtains and a view of trees.")

## Why a dark cushion works in a white window

Most folks put a pale cushion in a white window. This one went chocolate brown, and I love it.

It is a [window seat cushion](https://cushionguide.com/cushions/window-seat-cushions/) in a tweed-look weave from our [linen-look fabrics](https://cushionguide.com/fabrics/linen-look-fabrics/), cut as a box cushion and run wall to wall inside a deep white reveal. The piping matches the top, so from across the room the seat reads as one solid block.

Everything around it stays pale on purpose. Two ivory pillows repeat the window frame. Flax linen curtains hang to the floor on both sides like a picture frame. Dried pampas and wheat add height, and a cream wool rug keeps that dark rectangle from sinking the room.

And a dark seat forgives: coffee, sneakers, a dog who believes the window belongs to him. Now, what does your seat measure at the back, and at the front?

## Pinned by Rosa: five things in this window

Five spots in the photograph, from the curtain on the left to the rug underfoot.

1. **Ivory pillows**: Two pale pillows stand out against the dark seat and match the window frame.
2. **Self-piped edge**: Brown welt on brown keeps a dark cushion looking like one solid block.
3. **Dried grasses**: Pampas and wheat stems add height and repeat the curtain color.
4. **Linen curtains**: Curtains on both sides frame the seat like a picture.
5. **Cream rug**: A pale rug keeps the dark cushion from making the floor feel heavy.

## Four numbers for a seat like this, and where folks slip

1. **Length along the back**: Wall to wall on the window side. Old plaster is rarely square.
2. **Length along the front**: Again at the front edge. If the numbers differ, send both: that seat is a [trapezoid](https://cushionguide.com/glossary/#trapezoid-cushion).
3. **Depth**: Window wall to the front edge. Label it, since some buyers call this width.
4. **Height**: Floor to the seat top, plus the cushion thickness. That total is where you sit.

## The 138-inch seat that had to come in one piece

A buyer in the US wrote to the workshop about a window seat most of us would call a runway: 138 in (351 cm) long, 40 in (102 cm) deep and 3 in (7.6 cm) thick, in the L-06 linen with contrasting velvet piping. One worry kept them from checking out. Would a cushion that long arrive in two sections?

The workshop said it could make one continuous piece, then added the 40 x 138 in size to the listing so the order could go through.

Pull up a chair and learn from it: ask the one-piece question before you pay, because long lengths are sometimes made in two.

## Buyer questions

**A common question:** What would a trapezoid window seat cushion cost, and which numbers do you need?

**The workshop's answer:** All four sides. One buyer in the US sent 68.25 in (173 cm) along the back, 113.75 in (289 cm) along the front, and sides of 33.75 in (86 cm) and 33 in (84 cm), and was quoted from exactly those figures.

**A common question:** Our bay window is huge. Can you make a cushion for it in a sun-resistant black, not corduroy or velvet?

**The workshop's answer:** Yes, sun-resistant fabrics are available. For a trapezoid about 160 in (406 cm) long and 2 ft (61 cm) deep, the workshop suggested two pieces rather than one.

**A common question:** What size should I order for a mudroom bench niche so the seat ends up 18 in high?

**The workshop's answer:** That niche was 17 x 35.75 in (43 x 91 cm) and 15 in (38 cm) high, so a 3 in cushion gives an 18 in (46 cm) seat. Pick the nearest menu size, 17 x 36 x 3 in, and write the exact 17 x 35.75 x 3 in in the order note.

> Measure a wall-to-wall window seat twice: once along the back wall and once along the front edge. If the two lengths differ, the cushion is a trapezoid.
>
> — Rosa

> **Tailor's margin:** Seat height is the bench plus the cushion: a 15 in niche with a 3 in cushion sits at 18 in. Measure the base first, then pick the thickness.

## On the cutting table

|   |   |
|---|---|
| Cushion | Window seat box cushion, wall to wall |
| Fabric | Tweed-look weave, chocolate brown |
| Piping | Self piping, brown on brown |
| Edge | Box edge |
| Fit | Exact to the reveal; send back and front lengths |
| Pillows | Two ivory throw pillows |
| Long runs | Ask: one piece or two? |
| Best for | A [reading nook](https://cushionguide.com/cushions/reading-nook-cushions/) or living room window |

## Questions buyers ask next

### Should I copy the size of my old window seat cushion?

No. Measure the seat itself, inside the walls, at the back and at the front. An old cushion has been squashed or was cut for a different base, so its numbers carry its mistakes into the new one.

### Is a dark window seat cushion a good idea in a bright room?

Yes, if the rest of the scene stays light. A chocolate cushion with white trim, ivory pillows and a cream rug looks deliberate, and a dark seat forgives daily use far better than a pale one does.

### How long can a window seat cushion be and still come in one piece?

It depends on the run. One 138 in (351 cm) seat was made as a single continuous piece, while two pieces were suggested for a bay about 160 in (406 cm) long. Ask before you order.

## Related at the atelier

- [Window Seat Cushion in Sage Linen-Look on a White Storage Bench](https://cushionguide.com/readings/sage-linen-look-window-seat-cushion-white-storage-bench/): Choose window seat cushion thickness against the bench, not a listing photo: the cushion adds its full thickness to the seat height.
- [Window Seat Cushion With Chocolate Piping: Self, Contrast or None](https://cushionguide.com/readings/ivory-window-seat-cushion-chocolate-piping/): Choose contrast piping when a pale window seat cushion sits on a pale base, because a dark cord like chocolate brown draws the outline that white-on-white would blur.
- [Window Seat Cushion in Oatmeal with Sage Piping and Eucalyptus](https://cushionguide.com/readings/oatmeal-window-seat-cushion-sage-piping-eucalyptus/): A window seat cushion is seen from across the room before anyone sits on it, so choose the piping for the doorway view: a contrast welt such as sage on oatmeal outlines the cushion against a white…
- [Custom cushions for Dutch canal houses, houseboats and balconies](https://cushionguide.com/places/custom-cushions-netherlands/): Custom cushions in the Netherlands usually go on a canal-house window seat, a houseboat bench or a narrow balcony.
- [How much does a custom window seat cushion cost?](https://cushionguide.com/answers/custom-window-seat-cushion-cost/): A custom window seat cushion is priced by its size: send the length, depth and thickness, and the workshop sends a quote that shows the shipping cost.
- [How to dimension a notch so a cushion fits around posts and casings](https://cushionguide.com/guides/notched-cushion-cutouts-posts-casings/): A notched cushion is dimensioned from above with three numbers per notch: its offset from a named end, its width along the edge and its depth into the cushion.
- [Choosing cushion fabric: seven families compared for real homes](https://cushionguide.com/guides/cushion-fabric-types-compared/)
- [Reading nook bolsters, back pillows and a seat depth that invites a nap](https://cushionguide.com/guides/reading-nook-cushion-bolsters/)

*Porch light's on — Rosa*

---

Written by Rosa Delgado (https://cushionguide.com/masters/rosa/) 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/readings/chocolate-tweed-window-seat-cushion-linen-curtains/