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International mattress size guide

Same name.
Different bed.

Translate mattress sizes between countries before you buy the frame, bedding—or the mattress itself.

Compare two sizesBrowse by country ↓
US
QUEEN60 × 80 in
UK
KING150 × 200 cm
Nearlythe same footprint
USQUEEN ≠ QUEEN EVERYWHEREUKKING ≠ KING EVERYWHEREAU
01 / PICK A MARKET

Where is the bed
being sold?

The country is part of the size. We never separate the name from its market.

USUnited StatesTwin · Twin XL · Full · Queen · King · California King · Split KingExplore →UKUnited KingdomSmall Single · Single · Small Double · Double · King · Super KingExplore →CACanadaTwin · Twin XL · Full · Queen · KingExplore →AUAustraliaSingle · Long Single · King Single · Double · Queen · King · Super KingExplore →
02 / COMPARE

Put two beds
in the same room.

Every choice keeps its market attached. The overlays preserve relative width and length, while the signed answer stays available as text.

Mattress comparison controls and result

Outlines use true relative proportions
Width A − B+2.4 cmUS Queen is wider
Length A − B+3.2 cmUS Queen is longer
Area A − B+3.2%relative to UK King

Before you buy: nominal dimensions and apparent overlap do not guarantee compatibility. Check the seller’s finished width, length and tolerance, plus the frame’s internal opening.

Read the complete US queen vs UK king comparison →
03 / COMMON DECISIONS

Start with the comparisons that change a purchase.

Bounded guideUS Twin vs Twin XL mattress size

Twin XL adds length only; a Twin frame or fitted sheet should not be assumed to accept it.

Bounded guideUS Full vs Queen mattress size

Queen is seven inches wider and five inches longer using the sourced US conventions in this dataset.

Bounded guideUS King vs California King size

Regular King is wider; California King is longer. Their bedding and frames are not interchangeable by name.

Bounded guideUK Double vs King bed size

The extra length is as important as the width when checking a bedstead or fitted sheet.

Bounded guideUK King vs Super King bed size

Super King requires a wider opening and different fitted bedding; its nominal length does not increase.

Bounded guideUS Queen vs UK King mattress size

US Queen is 2.4 cm wider and 3.2 cm longer on nominal figures.

04 / BROWSE THE RECORDS

Named sizes, always qualified.

US and UK sizes have individual reference pages. Canadian and Australian records remain substantial country-level sections because their source constraints and published ranges are better understood together.

05 / WHY COUNTRY MATTERS

A familiar name can be a false friend.

Queen

A US Queen is 152.4 × 203.2 cm. In UK retail, Queen can refer to a 120 × 190 cm Small Double.

King

US King is 193.04 cm wide; UK King is 150 cm wide. The same word conceals a 43 cm difference.

Australian ranges

Checked publishers differ by millimetres or centimetres. BedMetric shows those disagreements instead of erasing them.

NOMINAL IS NOT GUARANTEED

Measure the product, not the name.

Finished dimensions, tolerances, soft edges and frame openings decide compatibility.

Measure correctly
06 / HOW IT WORKS

Helpful enough to make a decision.
Honest enough to show the limits.

Country first

Every ambiguous name keeps its market attached.

One measurement

Both unit systems come from one canonical millimetre value.

Evidence visible

Sources, checked dates and tolerance stay close to the answer.

Read how we verify