24 Aug 2012
August 24, 2012

Paper sizes and formats

August 24, 2012 Guide, Information

Paper Sizes

International Standards Organisation (ISO) has established a series of set paper sizes that range from A0 (the largest) to A7 (the smallest). A4 is the most common size for a standard letterhead. With each step down in size being equivalent to folding the longest side in half. Refer to diagram.

paper sizes

Sizes – A series

A0     841 x 1189 mm
A1     594 x 841 mm
A2     420 x 594 mm
A3     297 x 420 mm

A4     210 x 297 mm
A5     148 x 210 mm
A6     105 x 148 mm
DL     99 x 210 mm


This refers to the way In which the document is laid out. The standard layout is portrait – however, the document size and design may lend itself to a landscape format. Multiple formats can be employed to suit the communication piece and budget, including stapled booklets, concertina folding (when a page opens several times), gate fold (often seen in magazines, where an A4 page will open up to become A3), roll fold (often seen in letters when an A4 sheet is folded to DL) etc.

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