---
title: "Should a Cushion Be Smaller Than the Bench? Send Exact Sizes"
url: "https://cushionguide.com/answers/exact-measurements-or-size-down-custom-cushion/"
section: "The Cutting Table"
author: "Rosa Delgado, The Porch Keeper of Savannah"
author_url: "https://cushionguide.com/masters/rosa/"
published: "2026-08-31"
updated: "2026-09-24"
keywords: "should a cushion be smaller than the bench, exact measurements for custom cushion, cushion fit allowance, does piping add to cushion size, how to measure bench for cushion"
---

# Should I give my exact measurements or make the cushion a bit smaller?

*Half the folks who write in want to shave a little off, just in case. Put the pencil down. The true number is the one that fits.*

Also asked as: Exact measurements or a little smaller?; Should I deduct half an inch?

> **The quick answer:** No, don't make the cushion smaller than the bench: give the true, exact size of the space, end to end, without subtracting half an inch or a centimeter. The shop builds to the numbers you write and never shortens them itself; its production team handles any fitting allowance. Piping sits on the seams, so it doesn't change the cushion size either.

![Espresso corduroy window seat cushion on a white built-in under a slatted walnut wall, with floating shelves and a desk](https://cushionguide.com/media/window-seat-cushions/espresso-corduroy-window-seat-walnut-slat-office-1600.webp "The dark cushion completes the walnut slat wall behind it, so the window reads as one framed composition.")

## Key facts

- Give the exact end-to-end measurements of the space.
- Do not deduct half an inch or a centimeter.
- The shop builds to the measurements you give and does not shorten them.
- Fitting allowance is handled by the production team.
- Piping sits on the seams and does not change the size: a 48 x 21 in (122 x 53 cm) bench gets a 48 x 21 in cushion.
- Measuring in centimeters avoids rounding from inch conversion.

## What to send, and who handles the rest

| Your question | What to send | Who handles it |
|---|---|---|
| Take off half an inch so it slides in? | The exact size, nothing deducted | The production team, as fit allowance |
| End to end, or a bit short? | End to end, wall to wall | You measure; the shop builds to it |
| Subtract for the piping? | The bench size, such as 48 x 21 in | Nobody; piping sits on the seams |
| Inches or centimeters? | Whatever your tape read, labeled | The shop; centimeters skip a rounding step |

## Why shaving it yourself backfires

Pull up a chair. When you take off half an inch at home and the workshop also allows for fit, you risk taking that allowance off twice, and now there's a gap at the end of the bench where crumbs and dog toys go to live.

The shop makes exactly what you write. It doesn't second-guess your numbers downward, so the only safe number is the real one. On [bench cushions](https://cushionguide.com/cushions/bench-cushions/) and [window seat cushions](https://cushionguide.com/cushions/window-seat-cushions/) alike, [fit allowance](https://cushionguide.com/glossary/#fit-allowance) is the workshop's job. Yours is a straight tape. What does your bench really measure, end to end?

## The nook that lost a centimeter a side

A buyer messaged the workshop with a nook measuring about 34 1/4 x 28 1/4 in (87 x 72 cm) and a plan to order 33¾ x 28 in (86 x 71 cm), one centimeter off each side for a snug fit with piping. The workshop's advice didn't budge: send the real measurements and subtract nothing, because allowance is handled in production. Some folks still trim a little, and that's their call. But if you ask this porch, the tape measure already told the truth.

## Measuring for an honest number

1. **Measure end to end**: Full length wall to wall, then depth from the back to the front edge. The [bench measuring Pattern](https://cushionguide.com/guides/how-to-measure-bench-for-cushion/) shows where the tape goes.
2. **Write the true number**: No deductions for piping, fabric or wiggle room.
3. **Label the unit**: Inches or centimeters, on every measurement. If your tape read centimeters, send centimeters.
4. **Approve the drawing**: The shop sends a drawing of your dimensions and builds exactly to the approved layout.

> **Tailor's margin:** Send the bench's true size, not a trimmed one; piping sits on the seams, so a 48 x 21 in bench gets a 48 x 21 in cushion.

> Don't subtract half an inch for fit: a custom cushion is built to your exact numbers, and the workshop handles the allowance itself.
>
> — Rosa

## Buyer questions

**A common question:** Should I give the exact seat size or a little smaller so the cushion fits?

**The workshop's answer:** Give the exact size of the seat, end to end; there's no need to go smaller. The shop produces to the measurements you write and does not shorten them, so it fits properly.

**A common question:** Do I take half an inch off my measurements?

**The workshop's answer:** No. Send your true, exact measurements; the shop handles all fitting allowances during production.

**A common question:** For my window seat, should I knock off about a centimeter to allow for variation?

**The workshop's answer:** No. Give the exact measurements of the space and don't reduce them. The shop reviews your diagram and decides any allowance or adjustment with its production team.

**A common question:** Do my measurements need to include the piping?

**The workshop's answer:** No. Give the exact bench measurements, for example 48 x 21 in (122 x 53 cm). The cushion is cut to your bench size and the piping sits on the seams, so it doesn't change the size.

**A common question:** My walls aren't square and the numbers don't add up. Now what?

**The workshop's answer:** The shop draws your cushion to scale and checks that it closes. If it doesn't, you'll be asked to re-measure, check both diagonals or fill in a lettered outline. A gap within 1/4 in is accepted, and nothing is cut until you confirm.

## Questions buyers ask next

### Will a cushion made to my exact bench size be too tight to fit?

It shouldn't be. The shop builds to your numbers, and its production team reviews your diagram and handles any fitting allowance. Subtracting your own margin on top of that can leave a gap at the ends.

### Do centimeters or inches give a more accurate cushion?

Either works if every measurement is labeled. Centimeters skip the conversion step, so if your tape reads in centimeters, send those numbers as they are rather than rounding them into inches.

### Does the workshop pick the final cushion size for me?

No. It builds strictly to your numbers and won't choose the final size for you. It does send a drawing of your dimensions for approval and makes the cushion exactly to that approved layout.

## Related at the atelier

- [How thick should my cushion be to get the seat height I want?](https://cushionguide.com/answers/cushion-thickness-for-seat-height/): Seat height is bench height plus cushion thickness, so subtract your bench height from the seat height you want.
- [Which side of a cushion is the length and which is the width?](https://cushionguide.com/answers/cushion-length-vs-width-which-side-is-which/): On a cushion, length is the long side, measured left to right across the front, and width is the short side, measured from the front edge to the back edge, the same as seat depth.
- [Bench Cushion in Gray Hibiscus Print With Black Piping](https://cushionguide.com/readings/monochrome-hibiscus-print-cushion-black-piping-closeup/): To style a monochrome print bench cushion, keep every prop inside the print's palette and allow one warm note and one green.
- [Bench Cushion Without Piping: Navy Palm Jacquard on a Porch](https://cushionguide.com/readings/unpiped-navy-palm-bench-cushion-beach-porch/): A custom bench cushion without piping has a softer, more relaxed corner, which suits a porch or beach house better than a tailored welt.
- [Bouclé Bench Cushion in Cream: Styling a Soft Unpiped Edge](https://cushionguide.com/readings/cream-boucle-bench-cushion-soft-unpiped-edge/): A cream bouclé bench cushion with no piping is styled best by adding almost nothing: light oak underneath, a pale wall behind, and daylight to show the loops.
- [A seam came open or the zipper broke on my new cover. Can I get a replacement?](https://cushionguide.com/answers/cushion-cover-seam-open-zipper-broken/): If a seam opens or the zipper arrives broken on a new cushion cover, send the workshop a photo or short video the day you find it.
- [How to measure a bench for a custom cushion (the bench, not the old pad)](https://cushionguide.com/guides/how-to-measure-bench-for-cushion/)
- [How exact is a made-to-measure cushion? Handmade tolerance explained](https://cushionguide.com/guides/custom-cushion-size-tolerance/)

*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/answers/exact-measurements-or-size-down-custom-cushion/