Dimensions of the A series paper sizes as determined standard ISO 216 are reported given in the table to the right diagram in mm and inches (cm measurements can be obtained by dividing the value of 10 mm). A0, A1, A2, A3, A4, A5, A6 are one of the popular paper sizes used in office, colleges, schools, etc.
A4 size has become a standard size business letter in English speaking countries such as Australia, New Zealand and the United Kingdom, which the British imperial sizes previously used. In Europe, paper sizes have been adopted as an official standard in the middle of the 20th century, and from there they are distributed worldwide. Click here to know more about paper sizes chart.
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