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International Organization for Standardization


ISO (International Organization for Standardization) is an independent, non-governmental membership organization and the world’s largest developer of voluntary International Standards — made up of 162 member countries.  Links to more ISO paper standards.


A -, B -, and C Series formats, measured width by hight


A Series formats (mm)

B Series formats (mm)

C Series formats (mm)

4A0

1682 x 2378

2A0

1189 x 1682

A0

841 x 1189

B0

1000 x 1414

C0

917 x 1297

A1

594 x 841

B1

707 x 1000

C1

648 x 917

A2

420 x 594

B2

500 x 707

C2

458 x 648

A3

297 x 420

B3

353 x 500

C3

324 x 458

A4

210 x 297

B4

250 x 353

C4

229 x 324

A5

148 x 210

B5

176 x 250

C5

162 x 229

A6

105 x 148

B6

125 x 176

C6

114 x 162

A7

74 x 105

B7

88 x 125

C7

81 x 114

A8

52 x 74

B8

62 x 88

C8

57 x 81

A9

37 x 52

B9

44 x 62

C9

40 x 57

A10 26 x 37 B10 31 x 44 C10 28 x 40

Large-format poster names and printing sizes, measured hight by width


Double Quad Crown 60″ x 40″ Elephant 28″ x 23″
Quad Demy 45″ x 35″ Super Royal 27.5″ x 20.5″
Quad Crown 40″ x30″ Double Foolscap 27″ x 17″
Double Demy 35″ x 22.5″ Royal 25″ x 20″
Quad Foolscap 34″ x 27″ Medium 23″ x 18″
Double Large Post 33″ x 21″ Demy 22.5″ x 17.5″
Double Post 31.5″ x 19.5″ Music Demy 20″ x 15.5″
Imperial 30″ x 22″ Crown 20″ x 15″
Double Crown 30″ x 20″ Post 19.25″ x 15.5″
Foolscap 17″ x 13.5″

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