Formats

There are a selection of standard paper sizes that provide an efficient mean for designers and printers to communicate product specifications and control costs.

Paper and envelope sizes

Standardised sizes provide a ready means for selecting product formats that work together such as A4 paper and C4 envelopes

ISO System - based on a 'single aspect ratio' of square root of 2 or approximately 1:1:4142. The wide and the height of a page relate to each other like the side of the diagonal of a square. This is especially convenient for paper size. If you put two pages next to each other, or cut a piece in half then the resulting page will have the same width / height ratio.

'A' sizes

A0 - 841 x 1189

A1 - 594 x 841

A2 - 420 x 594

A3 - 297 x 420

A4 - 210 x 297

A5 - 148 x 210

A6 - 105 x 148

A7 - 74 x 105

A8 - 52 x 74

A9 - 37 x 52

A10 - 26 x 37

Generally speaking a sizes are used for printing everything from posters and magazines to notepads and postcards.

'B' Sizes

B0 - 1000 x 1414

B1 - 707 x 1000

B2 - 500 x 707

B3 - 353 x 500

B4 - 250 x 353 

B5 - 176 x 250

B6 - 125 x 176

B7 - 88 x 125

B8 - 62 x 88

B9 - 44 x 62

B10 - 31 x 44

'B' sizes are used for printing books

'C' Sizes

C0 - 917 x 1297

C1 - 648 x 917

C2 - 458 x 648

C3 - 324 x 458

C4 - 229 x 324

C5 - 162 x 229

C6 - 114 x 162

C7/6 - 81 x 114

C7 - 81 x 114

C8 - 57 x 81

C9 - 40 x 57

C10 - 28 x 40

C sizes are used for envelopes that will hold 'A' sizes

DL - 110 x 220 - Allows an A4 sheet with tho horizontal, parallel folds to fit comfortably inside. This and and the DL compliment slip are the same width as an A4 sheet of paper.

RA & SRA series - Based on ISO sizes and are used by printers they are slightly larger than 'A' series to