Paper Sizes

The ISO paper size A standard is based on each size being half of the size of the previous one. B and SR sizes allow printers room on the sheet for tick and registration marks and colour bars, C sizes are envelope sizes.

Format	A sizes	B sizes	C Sizes	SRA Sizes
0	841 x 1189	1000 x 1414	917 x 1297	900 x 1280
1	594 x 841	707 x 1000	648 x 917	640 x 900
2	420 x 594	500 x 707	458 x 648	450 x 640
3	297 x 420	353 x 500	324 x 458	320 x 450
4	210 x 297	250 x 353	229 x 324	225 x 320
5	148 x 210	176 x 250	162 x 229	-
6	105 x 148	125 x 176	114 x 162	-
7	74 x 105	88 x 125	81 x 114	-
8	52 x 74	62 x 88	87 x 81	-
9	37 x 52	44 x 62	40 x 57	-
10	26 x 37	31 x 44	28 x 40	-