Field guide · Bedroom

The mattress is not the bed.

Standard bed sizes in inches and the bedroom clearances around them — mattress sizes are standardized; bedrooms aren't. The frame adds inches, the doors swing, and the dresser drawers have to open. Here's the honest math, in inches.

01

US mattress sizes

SizeWidth × lengthNotes
Twin38 × 75kids, bunks
Twin XL38 × 80dorm standard; two make a split king
Full / Double54 × 75one adult, honestly
Queen60 × 80the American default
King76 × 80as wide as two twin XLs
California King72 × 84narrower, longer

The frame adds 2–5″ on each axis. A "queen bed" on a floor plan is not 60 × 80 — with a typical frame it's closer to 65 × 85, and a wingback headboard or a storage footboard adds more. Poché's bed stencils are mattress footprints with the frame noted; when you shop a real bed, the listing's outer frame dimensions are the numbers that matter.

02

The clearances a bedroom needs

24–30″ 24–30″ 36″ at the foot when it's the main path queen 60 × 80 (+frame) nightstand
make the bed from both sides — that's what the 24″ buys you
  • Bed sides: 24–30″ of space beside the bed, each side — enough to walk, make the bed, and open a nightstand drawer. 36″ where a side doubles as the main path.
  • Dresser front: 36″ — an open drawer is ~26″ of it, and you stand in the rest. Dressers run 48–72″ wide × 18–20″ deep.
  • Nightstands: 18–32″ wide. Set them 0–12″ from the bed; flush is correct.
  • Closet & door swings: a 30–36″ door sweeps a quarter-circle of its own width — furniture can't live in it.
  • Murphy bed: a queen cabinet is only ≈65 × 16 closed — but needs ~87″ clear in front to fold down. Plan the open state.
03

Does a king fit in a 12 × 12 room?

Worked honestly: a king with frame is ≈81″ wide. A 12-foot wall is 144″. That leaves 63″ to split between the two sides — a comfortable 31″ or so each, if nothing else lives on those walls. Put a 20″-deep dresser on one side with its 36″ of standing room and the sum is 81 + 20 + 36 = 137″, leaving 7″ for the far side of the bed against the 24″ it needs — so in 12 feet the dresser goes on the foot wall, or it goes. That's a lot of arithmetic for one corner of one room — which is why Poché just draws it on your plan and flags what pinches.

04

Common questions

What are the standard US bed sizes in inches?

Twin 38 × 75, Twin XL 38 × 80, Full 54 × 75, Queen 60 × 80, King 76 × 80, California King 72 × 84. Those are mattress footprints. A frame adds 2–5 inches on each axis, so a queen on a floor plan is closer to 65 × 85 — and a wingback headboard or a storage footboard adds more still.

How much space do you need on each side of a bed?

24–30 inches beside the bed on each side: enough to walk, make the bed, and open a nightstand drawer. Make it 36 where a side doubles as the main path through the room, and 36 at the foot when that is the route people actually take. Below 24, the bed stops being made from that side.

Does a king bed fit in a 12 × 12 room?

Just — and only if the side walls stay empty. A king with a frame is about 81 inches wide against a 144-inch wall, leaving 63 inches to split — a comfortable 31 or so each side. Put a 20-inch-deep dresser and its 36 inches of standing room on one of those walls and the arithmetic fails: 81 + 20 + 36 is 137, which leaves 7 inches for the other side of the bed, not the 24 it needs. In 12 feet a king and a dresser do not share a side wall; the dresser goes on the foot wall, or it goes.

How wide is a nightstand, and how far from the bed?

Nightstands run 18–32 inches wide. Set them anywhere from flush to 12 inches off the bed — zero is genuinely inside the range, not a compromise. Match the pair to the wall you actually have: two 18s fit where two 28s will not, and a nightstand that overhangs the bedside walkway costs more than the drawer is worth.

How much room does a dresser need in front of it?

36 inches. An open drawer is about 26 of that and you stand in the rest. Dressers themselves run 48–72 inches wide by 18–20 deep, so a dresser commits roughly four and a half feet of depth off its wall once the standing room is counted. That is why it so often decides which wall the bed gets.

What are the standard bed sizes in cm?

US mattresses, in centimetres: Twin 97 × 191, Twin XL 97 × 203, Full 137 × 191, Queen 152 × 203, King 193 × 203, California King 183 × 213. A frame adds roughly 5–13 cm on each axis, and you want 61–76 cm of floor beside the bed to make it and get in.

05

Pieces that fit

Every row is a size this guide just settled, handed to the merchants as a search. It is the same dimension-seeded lookup Poché runs from a bed footprint on your plan — no product is being recommended here, only a size.

Looking forTarget sizeSized searches
Twin38 × 75″ mattressAmazonWayfairIKEA
Full / Double54 × 75″ mattressAmazonWayfairIKEA
Queen60 × 80″ mattress · ≈65 × 85 framedAmazonWayfairIKEA
King76 × 80″ mattressAmazonWayfairIKEA
California King72 × 84″ mattressAmazonWayfairIKEA
Nightstand18–32″ wideAmazonWayfairIKEA
Dresser48–72″ wide × 18–20″ deepAmazonWayfairIKEA

Some of the links above are affiliate links: if you buy through one, we may earn a commission at no extra cost to you. It never changes what we show you — results are ranked by fit, never by payout.

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