Printing Size of Flyers and Brochures.

The dimensions of the A series paper sizes, as defined by ISO 216, are given in the table below in both millimetres and inches (cm measurements can be obtained by dividing mm value by 10). The A Series paper size chart to the right gives a visual explanation of how the sizes relate to each other - for example A5 is half of A4 size paper and A2 is half of A1 size paper.

Table of Paper Sizes From 4A0 to A10

SizeHeight x Width (mm)Height x Width (in)
4A02378 x 1682 mm93.6 x 66.2 in
2A01682 x 1189 mm66.2 x 46.8 in
A01189 x 841 mm46.8 x 33.1 in
A1841 x 594 mm33.1 x 23.4 in
A2594 x 420 mm23.4 x 16.5 in
A3420 x 297 mm16.5 x 11.7 in
A4297 x 210 mm11.7 x 8.3 in
A5210 x 148 mm8.3 x 5.8 in
A6148 x 105 mm5.8 x 4.1 in
A7105 x 74 mm4.1 x. 2.9 in
A874 x 52 mm2.9 x 2.0 in
A952 x 37 mm2.0 x 1.5 in
A1037 x 26 mm1.5 x 1.0 in

To obtain paper sizes in centimetres, convert mm values to cm by dividing by 10 and in feet by dividing inch values by 12.

4A0 & 2A0 - The DIN 476 Oversize Formats
The paper sizes bigger than A0, 4A0 & 2A0, aren't formerly defined by ISO 216 but are commonly used for oversized paper. The origin of these formats is in the German DIN 476 standard, that was the original base document from which ISO 216 was derived.

A Series Paper Size Tolerances
ISO 216 specifies tolerances for the production of A series paper sizes as follows:
±1.5 mm (0.06 in) for dimensions up to 150 mm (5.9 in)
±2 mm (0.08 in) for lengths in the range 150 to 600 mm (5.9 to 23.6 in)
±3 mm (0.12 in) for any dimension above 600 mm (23.6 in)

A Series Paper Sizes Defined
The A series paper sizes are defined in ISO 216 by the following requirements:
The length divided by the width is 1.4142
The A0 size has an area of 1 square metre.
Each subsequent size A(n) is defined as A(n-1) cut in half parallel to its shorter sides.
The standard length and width of each size is rounded to the nearest millimetre.
Note: For reference the last item is there because the root 2 aspect ratio doesn't always give a whole number.

International Usage
The A series paper sizes are now in common use throughout the world apart from in the US, Canada and parts of Mexico. The A4 size has become the standard business letter size in English speaking countries such as Australia, New Zealand and the UK, that formerly used British Imperial sizes. In Europe the A paper sizes were adopted as the formal standard in the mid 20th century and from there they spread across the globe.

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