Like the similar-sized ISO A5, it is used for everything from personal letter writing to official aeronautical maps ייתכן שאין לך עניין לדעת כמה עובדות מרגש על גודלי נייר בינלאומיים כמו שאתה לא צריך לעשות שימוש בגדלים נייר שונים מדי פעם
This gives it an aspect ratio of 1:1 The Chinese is also obviously motivated by traditional paper sheet sizes

הבדל בין נייר בגודל A4 ל

ISO 2784:1974 correspondence for continuous ADP paper Size Acceptable equivalent Direct equivalent Exact size Gross size inch × inch mm × mm AR inch × inch mm × mm AR mm × mm mm × mm inch × inch A4 8 × 12 203.

In orientation, it has the same 4:3 aspect ratio as the displays of traditional TV sets, some e
הבדל בין נייר בגודל A4 ל
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
A Paper Sizes
As a compromise between the two most popular paper sizes globally, PA4 is used today by many international , because it can be printed easily on equipment designed for either A4 or US Letter
The practical usage of this is that a letter written on A4 paper fits inside a C4 envelope, and both A4 and C4 paper fits inside a B4 envelope Some visual arts fields also continue to use these paper formats for large-scale printouts, such as for displaying digitally painted character renderings at life-size as references for makeup artists and costume designers, or to provide an immersive landscape reference
See , and for possible reasons for differing regional adoption rates of the standard sizes Of these additional formats, G5 169 × 239 mm and E5 155 × 220 mm are popular in Sweden and the Netherlands for printing dissertations, but the other formats have not turned out to be particularly useful in practice

A Paper Sizes

In 1991, it was split into DIN 476-1 for the A and B formats and 476-2 for the C series.

A Paper Sizes
Newspapers have a separate set of sizes
הבדל בין נייר בגודל A4 ל
DIN D4 equals SIS D5 and so on
גודל נייר
Apple, for instance, requires this format for digital music album booklets