A5 Paper Size Introduction

Trying to get all your measurements for the right paper size can me tedious so we put together this guide for paper sizes , here we will focus on the a5 paper size.

The following sizes are the ones that are used globally and the most common. These standards were first developed in France circa 1798 during the French revolution. They were subsequently enhanced by German scholars in 1922 who brought in the (DIN) structure that has become the framework the is used today across the world.

A5 is exactly half the size of A4 size for the ISO paper size all sizes are the square root of two. So for example the width and the height of pages are related to each other like a side and a diagonal area of a square.

A5 paper size – ISO 216 Standard A5
 = 148 millimeters by 210 millimeters
= 5.8″ x 8.3″ =
= 14.8cm x 21cm =
= 420pt x 595pt =
= 35pc x 50pc

a5 paper size

A5 Paper Size

– this is the technical name used to describe types of A5 paper sizes and sizes within both the A and B area.

ISO217/ISO 269 – These are two standards that are related to the A5 size. They are both supplementary standards and can be used intermittently. If you need a slightly adjusted size.





Some more technical notes on the A5 paper size-

  • A6 paper size is 2x the size of A5 paper size.
  • A5 is 1/2 the size of A4 and 1/4 the size of A3
  • A5 is 1/8 the size of A2 and 16 x the size of A1
  • A5 is 32 x the size of A0

How A5 Paper Size Compares to other sizes-


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