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Home / Window Hoisting

What Size Window Do I Need for a Mattress?

Mattresses are flexible and only 8–14" thick on edge. Most windows handle them — the opening just needs to exceed the mattress thickness.

Trusted across thousands of fit checks · updated daily
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Fit summaryFIG. FIT

Whether it fits comes down to the measurements most people skip.

measure exactlyAny window wider than 16" works. Standard: 32"×52" — plenty of room.
The spaceAny window wider than 16" works. Standard: 32"×52" — plenty of room.
What decides itMattress thickness (8–14") on edge = minimum window width. Flexible — bends to fit shorter openings.
What to measureKing: 76"×80"×10–14". On edge through window: 14" wide × 76–80" height (bendable).

Real openings run about 1 to 2 inches under the labeled size, and a single inch can flip the result. Check your own measurements before you buy or move.

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Verdicts compare all six item orientations against the space using verified building standards. See our methodology

10,000+ fit checks run·Last check: a few minutes ago

“Checked 6 items against our new apartment in 10 minutes. Knew exactly what to order.” — New apartment

Measure smart

What to measure.

Four numbers decide nearly every fit check. Get these right and the rest follows.

  1. 01Mattress thickness — 8–14" on edge; this is the minimum window width needed
  2. 02Mattress width — king: 76", queen: 60". This is the height dimension when on edge; window must be tall enough or mattress must bend
  3. 03Window opening dimensions — measure clear opening with sash removed

Don't make these

Common mistakes.

Most “it didn't fit” stories trace back to one of these oversights.

  1. ⚠Trying to push a mattress through flat — fold or roll it (for memory foam) or stand it on edge to minimize the dimension facing the window
  2. ⚠Forgetting mattress-in-a-box won't recompress — if you unrolled a bed-in-a-box, it won't go back in the box; it must go through the window at full size
  3. ⚠Not using a mattress bag — the window frame, sill, and brickwork will scrape and tear the mattress cover; use a bag

Frequently asked

Questions we keep getting.

  • What window size for a king mattress?

    A king mattress on edge is 10–14" thick — any window opening wider than 16" works. The mattress width (76") can be bent to fit through shorter windows. Standard double-hung windows handle all mattresses.

    01

  • Can a mattress be hoisted without professionals?

    For second-floor windows, many people successfully hoist mattresses with rope and a helper above/below. Above the second floor, hire professionals. Mattresses are light (80–150 lbs) but awkward in wind.

    02

More like this

Related fit checks.

How Wide Does a Hallway Need to Be for a Mattress?Find the minimum hallway width for a mattress. Stand it on edge (8–14 inches wide) and even the narrowest hallways work.How Wide Do Stairs Need to Be for a Mattress?Find the minimum stair width for a mattress. Mattresses flex and stand on edge — even king mattresses fit most standard stairways.What Size Elevator Fits a Mattress?Find the minimum elevator size for a mattress. Stand it on edge — a king mattress needs 80 inches of ceiling height and 14 inches of floor width.Will a Mattress Fit Through a Window?Check if your mattress will fit through a window opening. Covers king, queen, full, and twin sizes — window removal, bending foam mattresses, and hoisting.Will a Queen Mattress Fit in a Cargo Van?Check if a queen mattress will fit in a cargo van. Compare cargo dimensions for Sprinter, Transit, ProMaster, and rental vans.

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