ISO 'A' series paper size definition
A' size or 'A' series is a set of paper sizes established by the International Organization for Standardization (ISO). Sizes range from 4A0 (the largest) to A10 (the smallest).
The
physical size of the paper goes down as the number goes up, and each
is
simply
half the size of the previous.
For example...
two A4 sheets make up an A3 piece,
and two A5 sheets make up
an A4 sheet.
|
ISO A and B/C series sizes (mm & inch values) |
||||||
|
Format |
A series |
B series |
C series |
|||
|
Size |
mm × mm |
in × in |
mm × mm |
in × in |
mm × mm |
in × in |
|
0 |
841 × 1189 |
33.1 × 46.8 |
1000 × 1414 |
39.4 × 55.7 |
917 × 1297 |
36.1 × 51.1 |
|
1 |
594 × 841 |
23.4 × 33.1 |
707 × 1000 |
27.8 × 39.4 |
648 × 917 |
25.5 × 36.1 |
|
2 |
420 × 594 |
16.5 × 23.4 |
500 × 707 |
19.7 × 27.8 |
458 × 648 |
18.0 × 25.5 |
|
3 |
297 × 420 |
11.7 × 16.5 |
353 × 500 |
13.9 × 19.7 |
324 × 458 |
12.8 × 18.0 |
|
4 |
210 × 297 |
8.3 × 11.7 |
250 × 353 |
9.8 × 13.9 |
228 × 324 |
9.0 × 12.8 |
|
5 |
148 × 210 |
5.8 × 8.3 |
176 × 250 |
6.9 × 9.8 |
162 × 229 |
6.4 × 9.0 |
|
6 |
105 × 148 |
4.1 × 5.8 |
125 × 176 |
4.9 × 6.9 |
114 × 162 |
4.5 × 6.4 |
|
7 |
74 × 105 |
2.9 × 4.1 |
88 × 125 |
3.5 × 4.9 |
81 × 114.9 |
3.2 × 4.5 |
|
8 |
52 × 74 |
2.0 × 2.9 |
62 × 88 |
2.4 × 3.5 |
57 × 81 |
2.2 × 3.2 |
|
9 |
37 × 52 |
1.5 × 2.0 |
44 × 62 |
1.7 × 2.4 |
40 × 57 |
1.6 × 2.2 |
|
10 |
26 × 37 |
1.0 × 1.5 |
31 × 44 |
1.2 × 1.7 |
28 × 40 |
1.1 × 1.6 |
