CushionGuide
Get a quote

The Cutting Table · a question, worked through

How much does a trapezoid bay window seat cushion cost?

Two measurements set the price. Three more make it fit. The conversation usually runs in this order.

Answered by

The Quiet Geometer of Seattle ·

Pinned by Hana

The quick answer

A trapezoid window seat cushion's cost is set by two measurements: its depth and its longest length. Select those ranges on the trapezoid listing and the price appears; the low starting price is for the smallest size. For a firm quote, send a drawing with all five A-E measurements and any notches. Piping costs nothing extra.

Get a quote for a trapezoid bench cushion

Key facts

  • Trapezoid price uses the depth and the longest length.
  • The listing's starting price is for the smallest size.
  • A firm quote uses a drawing with A-E measurements, notches included.
  • Thickness options are 2, 3, 4 or 5 in (5, 8, 10 or 13 cm).
  • Piping is not extra and can be a contrasting color.
  • Bays over about 14 ft (4.3 m) are made in two pieces.
  • Cover-only trapezoids can be made for foam you supply.

Have it made

Have Hana’s workshop cut this for you

A good size is a quiet thing. You notice it only when it is wrong. Let the workshop check yours first. — Hana

Leave your details and the workshop will call you to confirm measurements, fabric, foam and piping. No prices, dates or payment on this page: it is a request, not an order.

Fabric · Foam · Pipingwhat the workshop will confirm with you

Fabric
The cover cloth: weave, color and care code.
Foam
Cover-only trapezoids can be made for foam you supply.
Piping
Piping is not extra and can be a contrasting color.
Only for this request: no marketing calls or texts. Outside the US, add the country code.
In inches: length × depth × thickness, plus any angles or cut corners.

* Required. A member of the workshop team will call you to talk it through; nothing is charged and nothing is made until you have agreed on every detail with them.

We use these details only to answer this request and make your cushion: your name and contact details, the cushion details and photos you send, the page you came from and the ad or link that brought you, if any. The workshop that makes the cushions receives them. We don't sell them or share them for advertising, and we delete requests after 24 months. Privacy notice for requests.

Nothing is made or charged until you approve the details.

Want to pick the shape and add photos? Use the full quote form

“Can you just tell me the price?”

Not before two numbers. A trapezoid cushion is priced by its depth and its longest length. Choose those ranges on the trapezoid listing and the price appears.

The low starting price you see first is for the smallest size. Angled shapes also cost more than rectangles. They take more labor.

To test your numbers before you ask, try the trapezoid cushion calculator.

“And for a firm quote?”

  1. Draw the seat from above

    A simple sketch. Front edge at the bottom, wall at the top.

  2. Label A to E

    Front, back, depth, and both angled sides.

  3. Mark any notches

    Where the seat meets a post or casing, draw the cutout with its size.

  4. Choose a thickness

    2, 3, 4 or 5 in (5, 8, 10 or 13 cm).

  5. Choose the piping

    It is not extra. It can be a contrasting color.

A real project

A bay seat with notches

A buyer in the US sent a bay seat: 70 in (178 cm) along the front, 44 in (112 cm) along the back, 20.5 in (52 cm) deep, with 2.5 in (6.4 cm) notches, at 2 in (5 cm) thick.

Those numbers were enough. Depth and longest length went onto the trapezoid listing, and the price appeared.

“My bay is long, and I already have foam.”

Bays over about 14 ft (4.3 m) are made in two pieces.

If you already have foam, a cover-only trapezoid can be made for it. Covers are removable and wash at 86°F (30°C). Keep them out of the tumble dryer. The trapezoid measurements Pattern shows where each tape goes.

What does your longest edge measure?

Two numbers set the price. Five numbers set the fit. The drawing does both.

Piping on a trapezoid window seat cushion costs nothing extra, and it can be sewn in a contrasting color.

Hana
Share on X (opens a new window)

Buyer questions

  1. A common question

    How is a trapezoid window seat cushion priced?

    The workshop's answer

    By two measurements, depth and longest length, selected on the trapezoid listing. The low starting price is for the smallest size, and angled shapes cost more than rectangles because they take more labor.

  2. A common question

    Roughly what would my bay window cushion cost?

    The workshop's answer

    It depends on your A-E measurements, so send a drawing first. Past quotes covered a linen trapezoid about 137 in (3.48 m) along the front and 30 in (77 cm) deep with contrast piping, and a bay over 14 ft made in two pieces. Cover-only versions have been made where the buyer supplied the foam.

  3. A common question

    What thickness options are there for a trapezoid bay cushion?

    The workshop's answer

    2, 3, 4 or 5 in. Piping is not extra and can be a different color, and the cover is removable and washable at 86°F (30°C), with no tumble dryer.

  4. A common question

    Is one long cushion cheaper than several pieces?

    The workshop's answer

    Usually about the same, because price follows total surface. Separate pieces add sewing and zippers, yet real splits came out equal or slightly cheaper.

  5. A common question

    Does the store sale apply to a custom trapezoid quote?

    The workshop's answer

    Yes. Custom quotes already include the current store sale, even for custom sizes, but codes can't be stacked on top.

Questions buyers ask next

What if my seat is smaller than the smallest size option?

Payment is matched to your written size. Below the smallest option, you order that option and the shop refunds anything above its quote; a cushion a few inches shorter than an option has sometimes earned a small partial refund.

Can I supply my own foam and order only a trapezoid cover?

Yes. Cover-only trapezoids are made for buyer-supplied foam, including one for a bay about 95 in (241 cm) along the front. Send the same A-E drawing, measured on the foam, plus its thickness.

When does a bay cushion have to be made in two pieces?

When the bay runs over about 14 ft (4.3 m). The two pieces are still sized from your A-E drawing, and the same thickness and piping choices apply to both.