Standard paper formats are used for printing - the most widely used are the formats A (A0-A10) and B (B0-B10) - and the format line C (envelopes, C0-C10).
The format series "A" (ISO 216, DIN 476, ANSI/ASME Y14.1m-1995) begins on the size A0 with the area of 1m2. The aspect ratio of its sides (height/width) is the square root of 2 (ã2, 1.4141).
The sizes of the "B"-line are geometric mean of the same and the nearest higher format of the A line. The sizes of the "C"-line are geometric mean of the same formats from the A- and B-lines.
The sizes of the A- and B-formats (in mm) are following:
Format
A
Format
B
4A0
1682 x 2378
-
-
2A0
1189 x 1682
-
-
A0
841 x 1189
B0
1000 x 1414
A1
594 x 841
B1
707 x 1000
A2
420 x 594
B2
500 x 707
A3
297 x 420
B3
353 x 500
A4
210 x 297
B4
250 x 353
A5
148 x 210
B5
176 x 250
A6
105 x 148
B6
125 x 176
A7
74 x 105
B7
88 x 125
A8
52 x 74
B8
62 x 88
A9
37 x 52
B9
44 x 62
A10
26 x 37
B10
31 x 44
Oversize formats:
Format
A-oversized
A1.0
594 x 1189
A2.0
420 x 1189
A2.1
420 x 841
A3.0
297 x 1189
A3.1
297 x 841
A3.2
297 x 594
In drivers, plotter model names, etc, you can find also the US formats:
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