Paper Sizes
A Sizes The A-series consists of a logical set of paper sizes that are defined by the ISO 216 standard (ISO stands for International Organisation for Standardisation). The largest size (A0) measures one square metre. The height/width ratio remains constant (1:1.41) for all sizes. This means you get the A1 size by folding an A0 paper in two along its shortest side. Then fold the A1 size in two to get an A2 size paper, and so on… A-sizes are used to define the finished paper size in commercial printing.
NOTE: A4 is used for office documents. A6 is used for postcards.
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Half a sheet of A4 = A5 Two sheets of A4 = A3 Four sheets of A4 = A2 Eight sheets of A4 = A1 Sixteen sheets of A4 - A0 A0 840mm x 1188mm A1 594mm x 841mm A2 420mm x 594mm A3 297mm x 420mm A4 210mm x 297mm A5 148.5mm x 210mm A6 105mm x 148.5mm A7 74mm x 105mm |
B Sizes (Poster Sizes)
The same logic from the A-sizes also applies for the B-series, which starts at 1 metre. B-sizes are often used for posters.
B0 1000mm x 1414mm
B1 707mm x 1000mm
B2 500mm x 707mm
B3 353mm x 500mm
B4 250mm x 353mm
B5 176mm x 250mm
B6 125mm x 176mm
Envelope Sizes
C-sizes are used for envelopes to match the
A-series paper.
C0 917mm × 1297mm
C1 648mm × 917mm
C2 458mm × 648mm
C3 324mm × 458mm
C4 229mm × 324mm
C5 162mm × 229mm
C6 114mm × 162mm
C7/6 81mm × 162mm
C7 81mm × 114mm
C8 57mm × 81mm
C9 40mm × 57mm
C10 28mm × 40mm
DL 110mm × 220mm
C1 648mm × 917mm
C2 458mm × 648mm
C3 324mm × 458mm
C4 229mm × 324mm
C5 162mm × 229mm
C6 114mm × 162mm
C7/6 81mm × 162mm
C7 81mm × 114mm
C8 57mm × 81mm
C9 40mm × 57mm
C10 28mm × 40mm
DL 110mm × 220mm
Page Last Updated: 19 August 2011
