Paper & Board Sizes

In the ISO paper size system, all pages have a height-to-width ratio of the square root of two (1:1.4142).
This aspect ratio is especially convenient for paper size. If you put two pages with this aspect ratio next to each other or equivalently cut one parallel to its shorter side into two equal pieces, then the resulting page will again have the same width/height ratio.

The ISO Paper Size Concept

The ISO paper sizes depend on the metric system. The square-foundation of-two proportion doesn't permit the level and width of the pages to be well adjusted metric lengths. In this manner, the region of the pages has been characterized to have decent measurement values. As paper is normally determined in g/m², this permits simple computation of the mass of a record on the off chance that the organization and number of pages are known.
Sheet size A0 has an area of 1 m².The proportion of the sides of An and B series papers is 1:2.

A Series - For All Printing Work

SHEET SIZEMILLIMETRES
4A01682 x 2378
2A01189 x 1682
A0841 x 1189
A1594 x 841
A2420 x 594
A3297 x 420
A4210 x 297
A5148 x 210
A6105 x 148
A774 x 105
A852 x 74
A937 x 52
A1026 x 37

 

B Series - For Posters, Wall Charts, Etc

SHEET SIZEMILLIMETRES
B01000 x 1414
B1707 x 1000
B2500 x 707
B3353 x 500
B4250 x 353
B5176 x 250
B6125 x 176
B788 x 125
B862 x 88
B944 x 62
B1031 x 44

 

C Series - For Envelopes Or Folders To Take A Series Items

SHEET SIZEMILLIMETRES
C0917 x 1297
C1648 x 917
C2458 x 648
C3324 x 458
C4229 x 324
C5162 x 229
C6114 x 162
C781 x 114
C857 x 81
C940 x 57
C1028 x 40

Stock Sizes - For Normal Trims

SHEET SIZEMILLIMETRES
RA0860 x 1220
RA1610 x 860
RA2430 x 610
RA3305 x 430
RA4215 x 305

Stock Sizes - For Bleeds Or Extra Trims

SHEET SIZEMILLIMETRES
SRA0900 x 1280
SRA1640 x 900
SRA2450 x 640
SRA3320 x 450
SRA4225 x 320