2021年8月11日 · Dimensions and use of popular paper sizes such as the ISO, SRA, metric or British and American formats

A Paper Size in cm, inches . A series paper sizes and dimensions are defined by the ISO 216 international paper size standard. The A series is comman and world wide used paper size. The base A0 size of paper is defined as having an area of 1 m2 and a dimension ratio of 1 to √2.

A simple, free, comprehensive resource for finding the international standards for paper sizes in metric and imperial.

Paper size standards govern the size of sheets of paper used as writing paper, stationery, cards, and for some printed documents. The ISO 216 standard, which includes the commonly used A4 size, is the international standard for paper size.

The A Series paper size chart, below left, gives a visual representation 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.

An explanation of the ISO 216 paper size format standard, including definition of A series paper sizes (A3, A4, A5 etc)

There are a number of paper size standards used in the world today, the most commonly used being the international ISO standard and a standard used in North America. These sizes are used to order various printed items such as stationery, brochures, digital copies, fliers, etc.