Papersizesio

ThemostcommonpapersizeusedinEnglishspeakingcountriesaroundtheworldisA4,whichis210mm×297mm(8.27inches×11.7inches).Thelargestsheetfrom ...,Ausefultooltocomparepapersizes.,Asimple,free,comprehensiveresourceforfindingtheinternationalstandardsforpapersizesinmetricandimperial.

參考資訊如下
A Paper Sizes

The most common paper size used in English speaking countries around the world is A4, which is 210mm × 297mm (8.27 inches × 11.7 inches). The largest sheet from ...

Compare Paper Sizes

A useful tool to compare paper sizes.

Papersizes.io

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