International Mattress Sizes

Denomination

U.S./Canada inches (cm)

U.K. inches (cm)

E.U.   (Continental) cm (inches)

Asia (Thailand) cm (inches)

Crib / Toddler

27   14 × 5158 in
(69 × 131 cm)

27   12 × 55 in
(70 × 140 cm)

Cot/Mini Single (UK: small single; this size is not common in the US)

30 × 70 in
(76 × 178 cm)

30 × 69 in
(76 ×   175 cm)

UK: small single (small single is used to mean several different sizes)

30 × 75 in
(76 × 191 cm)

Modern Cot

30 × 74 in
(76 × 188 cm)

Single/Twin (USA: twin)

39 × 75 in
(99 × 191 cm)

36 × 75 in
(91 × 191 cm)

90 × 190 cm
(35 × 75 in)

107 × 198 cm
(42 × 78 in)

Single/Twin XL

39 × 80 in
(99 × 203 cm)

42 × 75 in
(107 × 191 cm)

Double/Full (US: double)

54 × 75 in
(137 ×191 cm)

48 × 75 in
(122 × 191 cm)

140 × 190 cm
(55 × 75 in)

122 × 198 cm
(48 × 78 in)

Double/Full XL (UK: double)

53 × 80 in
(135 ×203 cm)

54 × 75 in
(137 × 191 cm)

3/4 (Three Quarter)-not commonly found.

Typically for antique/heirloom beds

48.0×73.0–75.0 in
(100× 200 cm)

Queen

60 × 80 in
(152 × 203 cm)

160 × 200 cm
(63 ×   79 in)

153 × 198 cm
(60 × 78 in)

Olympic/Expanded Queen (novelty size)

66 × 80 in
(168 × 203 cm)

California Queen (primarily a wood-framed water bed size, becoming obsolete)

60 × 84 in
(152 × 213 cm)

King (Eastern King) (UK: King)

76 × 80 in
(193 ×   203 cm)

152 × 198 cm
(60 × 78 in)

180 × 200 cm
(71 × 79 in)

183 × 198 cm
(72 × 78 in)

California King Waterbed Insert

70 × 82 in
(178 × 208 cm)

California King

72 × 84 in
(183 × 213 cm)

Super King (UK: Super King)

72 × 78 in
(183 × 198 cm)

Grand King (novelty size)

80 × 98 in
(203 × 249 cm)

San Francisco King (novelty size)

84 × 84 in
(213 × 213 cm)