CushionGuide
Get a quote

The Cutting Table · a checklist answer

What size cushion fits on top of an IKEA Kallax used as a bench?

Also asked as:Kallax bench cushion sizeKallax on its side as a seat

The numbers in the product name describe a shelf standing up. Lay it down and they change jobs.

Answered by

The Quiet Geometer of Seattle ·

Charcoal taupe linen-look seat cushion and tall box backrest with ivory piping on a mudroom bench above shoe cubbiesSave
A built-in entry bench with shoe cubbies below gets a thick taupe seat and a tall leaning backrest, both outlined in ivory piping.

The quick answer

A long 1x4 IKEA Kallax laid on its side has a top of about 15⅜ x 57⅝ in (39 x 146.5 cm), and that is the cushion size. The square 2x2 unit's top is about 15⅜ x 30⅛ in (39 x 76.5 cm). The 16⅜ in in the product title becomes the bench height. Measure your own unit first, since IKEA sizes vary by country.

Get a quote for a Kallax bench cushion

Key facts

  • The 16⅜ x 57⅝ in in the KALLAX title is width x height, not the seat surface.
  • A 1x4 Kallax on its side has a top of about 15⅜ x 57⅝ in (39 x 146.5 cm).
  • On its side, the 16⅜ in (about 42 cm) becomes the bench height.
  • A 2x2 Kallax top is about 15⅜ x 30⅛ in (39 x 76.5 cm).
  • The listing option reads '15x57 in - Ikea Kallax' because of character limits, but is made at 15¼ x 57¾ in (39 x 146.5 cm).
  • IKEA dimensions vary by country; measure your own unit.

Have it made

Have Hana’s workshop cut this for you

Measure once, slowly. Write the numbers here. The workshop will go over them with you. — 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
The core: its density and thickness set the feel.
Piping
The corded seam edge: matching, contrast or none.
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

The title numbers are standing up

The 16⅜ x 57⅝ in printed with the product name is width by height. It describes the shelf upright, against a wall.

Tip it onto its long side and the numbers trade places. The 57⅝ in becomes the bench's length. The 15⅜ in shelf depth becomes the seat depth. The 16⅜ in width becomes the height you sit at. So the cushion is about 15⅜ x 57⅝ in (39 x 146.5 cm), not 16⅜.

The IKEA Kallax cushions hub collects the common builds, the Kallax sizes Pattern goes deeper into thickness, and Kallax bench builds shows them in real rooms. Which one do you have, the long unit or the square one?

Standing, it holds books. Lying down, it holds you. The tape measure notices the difference.

Two Kallax units, two tops

UnitTop on its sideHow to order
Long 1x4About 15⅜ x 57⅝ in (39 x 146.5 cm)The '15x57 in - Ikea Kallax' option, made at 15¼ x 57¾ in (39 x 146.5 cm)
Square 2x2About 15⅜ x 30⅛ in (39 x 76.5 cm)Write the size in personalization

Before you order

  • Confirm which unit you own: buyers call both the 1x4 and the 2x2 a '4-cube'
  • Measure the top of your own unit; IKEA sizes vary by country
  • Choose the Kallax option on the window seat cushion listing
  • If your top measures differently, write the real size in personalization
  • Ordering for several units? Ask for them to be quoted together

The 16⅜ x 57⅝ in on an IKEA Kallax is width by height; laid on its side as a bench, the seat top is about 15⅜ x 57⅝ in.

Hana
Share on X (opens a new window)

Buyer questions

  1. A common question

    What size cushion do I need for a KALLAX used as a bench?

    The workshop's answer

    The 16⅜ x 57⅝ in in the product title is width x height. Laid on its side, the top is usually 57⅝ in long x 15⅜ in deep (146.5 x 39 cm), and the 16⅜ in becomes the bench height. Measure your own unit, as IKEA dimensions vary by country.

  2. A common question

    What size fits on top of a 4-cube Kallax?

    The workshop's answer

    A long 4-cube Kallax top is about 15 x 57 in (39 x 146.5 cm). At the time, the shop said to pick the 16 x 59 in option and it would be made to the exact Kallax size; there is now a dedicated Kallax option.

  3. A common question

    What sizes fit the long Kallax and the smaller square one?

    The workshop's answer

    The shop made 15¼ x 57¾ in (39 x 146.5 cm) cushions for the long unit and 15⅜ x 30⅛ in (39 x 76.5 cm) for the square one, and quoted all three cushions together. Order through the IKEA Kallax option on the window seat cushion listing.

  4. A common question

    Can you make a cushion for the top of a Kallax unit?

    The workshop's answer

    Yes, to the exact 15⅜ x 57⅝ in (39 x 146.5 cm). The option reads '15x57 in - Ikea Kallax' because of character limits, but the cushion is made to the full measurement.

Questions buyers ask next

Why is the Kallax option labeled 15x57 in?

Character limits on the listing. The option reads '15x57 in - Ikea Kallax', but the cushion is made to the full 15¼ x 57¾ in (39 x 146.5 cm), which is 15⅜ x 57⅝ in. You don't need to add the fractions yourself.

How tall is a Kallax bench once it lies on its side?

About 16⅜ in (42 cm) before the cushion, because the unit's width becomes its height. Add the cushion thickness, minus a little compression when you sit, to find your real seat height.

Which Kallax do buyers mean when they say 4-cube?

Either one, which is the trouble. Buyers use '4-cube' for the long 1x4 unit and for the square 2x2, and their tops differ: about 57⅝ in long against about 30⅛ in. Say which you have, or send measurements.