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Paper Sizes for Print

Paper and Board Sizes are measured internationally by the standard ISO 216. 

The height divided by the width on all sizes is the square root of two (1.4142), as a result when you fold a sheet in half the two halves will have the same proportions. This is of benefit when a design needs to be reproduced in a smaller or larger format. eg: from a poster to a leaflet. Simply reducing it by 70% (to go down two sizes is 50%) or enlarging by 140% (up two sizes is 200%) . These options commonly appear on photocopiers, office printers and many other digital systems.

Diagram shows standard A sizes, other production, envelope & stock sheet sizes are featured below.

A Series

Standard sizes for most literature

Sheet
Size (mm)
A0 841 × 1189
A1 594 × 841
A2 420 × 594
A3 297 × 420
A4 210 × 297
A5 148.5 × 210
A6 105 × 148.5
A7 74 × 105
A8 52 × 74
A9 37 × 52

B Series

Often used to produce literature that needs to stand out. Also supplied by paper mills for smaller format presses.

Sheet
Size (mm)
B0 1000 x 1414
B1 707 x 1000
B2 500 x 707
B3 353 x 500
B4 250 x 353
B5 176 x 250

C Series - Envelopes

Standard sizes of envelopes, designed to carry A sized sheets.

Sheet
Size (mm)
C4 229 x 324
C5 162 x 229
C6 114 x 162
DL 110 x 220

Stock Sizes

As supplied by paper mills for large format presses.

Sheet
Size (mm)
RA0 860 x 1220
RA1 610 x 860
RA2 430 x 610