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The Cutting Table · a checklist answer

What bed size does the floor sofa make, and what sheets fit it?

Also asked as:What size sheets do you recommend?What are the dimensions as a flat bed?

Six numbers, one sheet size. Here they are, labeled.

Answered by

The Pattern Engineer of Detroit ·

Charcoal linen-look tufted floor lounger with a back cushion and bolster on a cream rug below framed line-art printsSave
The same module in charcoal becomes a graphic anchor against warm plaster.

The quick answer

Each floor sofa mattress is 39 x 79 in (about 100 x 200 cm), close to Twin XL, so Twin XL sheets fit each one. Laid flat, the L-shape without the ottoman makes about 79 x 79 in, and with the ottoman 79 x 119 in. The ottoman alone is roughly twin size. The bean bag sofa bed opens to 55 x 79 in (140 x 200 cm).

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Key facts

  • Each floor couch mattress is 39 x 79 in (about 100 x 200 cm).
  • The standard single sofa is 39 x 79 x 13 in (about 100 x 200 x 33 cm).
  • Twin XL sheets fit each mattress.
  • The L-shape laid flat without the ottoman is about 79 x 79 in (200 x 200 cm).
  • The L-shape laid flat with the ottoman is 79 x 119 in (200 x 302 cm).
  • The ottoman alone is about twin size.
  • The bean bag sofa bed opens to 55 x 79 in (140 x 200 cm).

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Have Nate’s workshop cut this for you

Send the numbers in inches: length × depth × thickness, plus any angle. The workshop checks them with you, because foam has no undo button. — Nate

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.

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How many Twin XL sheets does a floor sofa need?

  • Count mattresses, not sofas: each one is 39 x 79 in (about 100 x 200 cm).
  • Buy one Twin XL fitted sheet per mattress.
  • L-shape without the ottoman: two sheets for a flat area of about 79 x 79 in (200 x 200 cm).
  • L-shape with the ottoman: the flat area grows to 79 x 119 in (200 x 302 cm), and the ottoman is roughly twin size.
  • Closed-corner sofa: it lays out to 79 x 118 in (200 x 300 cm).
  • Bean bag sofa bed: a different piece, 55 x 79 in (140 x 200 cm) opened.

Piece by piece, laid flat

PieceFlat sizeSheets
One floor couch mattress39 x 79 in (100 x 200 cm)1 Twin XL
L-shape, no ottomanAbout 79 x 79 in (200 x 200 cm)2 Twin XL, one per mattress
L-shape with ottoman79 x 119 in (200 x 302 cm)2 Twin XL, plus one for the twin-size ottoman
Bean bag sofa bed55 x 79 in (140 x 200 cm)Sized to 55 x 79 in

Queen or king? Neither, exactly

The flat bed is not one mattress. It's two separate 39 in (100 cm) mattresses lying side by side, so the honest spec is two Twin XL sheets, one per piece, not one big sheet stretched across a seam. Each piece is its own floor mattress; the standard sofa stands 39 x 79 x 13 in (about 100 x 200 x 33 cm) with the cushion.

The Twin XL match is close, not exact: a Twin XL sheet is cut for 38 x 80 in, so one inch narrower and one inch longer than the mattress. The floor sofa bed size and firmness Pattern covers the feel, and small apartment floor sofa layouts shows where the ottoman goes. Where will your guest sleep, partner: on the L or across the ottoman?

A floor sofa mattress is 39 x 79 in, close to Twin XL, so buy one Twin XL fitted sheet per mattress, not one big sheet for the whole bed.

Nate
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Buyer questions

  1. A common question

    How big is the L-shaped floor sofa laid flat as a bed?

    The workshop's answer

    Without the ottoman it lays out to 79 x 79 in (200 x 200 cm); with the ottoman, 79 x 119 in (200 x 302 cm). A single sofa is 39 x 79 in and the closed-corner sofa is 79 x 118 in.

  2. A common question

    How big is each mattress, and what bed does it make unfolded?

    The workshop's answer

    Each mattress is 39 x 79 in, nearly Twin XL, and the standard sofa is 39 x 79 x 13 in with the cushion. Side by side they make a bed of about 79 x 79 in, so two Twin XL sheets cover them. The ottoman alone is about twin size.

  3. A common question

    What size bed sheets does the bean bag sofa bed need?

    The workshop's answer

    Opened out as a bed, it measures 55 x 79 in (140 x 200 cm).

  4. A common question

    Can the floor sofa seat be made less deep than 39 in?

    The workshop's answer

    Possibly: 30 in (76 cm) deep has been made, but backrests take space. At 28 in (71 cm) only about 16 in (41 cm) of seat remains, and the workshop advises against 29 in. Non-standard widths may not fit the L-shaped backrest.

Questions buyers ask next

How deep should a regular floor cushion be for sitting cross-legged?

Standard floor cushions are 24 or 27 in (61 or 69 cm) deep; adults sitting cross-legged do better with at least 28 in (71 cm). Custom depths such as 4 ft x 27 in x 8 in can be ordered.

Can a round floor cushion be made to an exact diameter?

Yes, up to 49 in (125 cm) across. Order the nearest listed size, for example 32 in for a 33 in round, and note your exact diameter; 59 in (150 cm) is too large.

What if my room calls for an odd shape, like a trapezoid?

Send a photo or hand sketch with every measurement and the workshop quotes options. When a bench differs only slightly end to end, such as 16.3 vs 16.9 in (41.5 vs 43 cm), an averaged rectangle is recommended instead.