What is size A4 paper used for? October 21, 2021 by admin A4 is a paper size that is used for a wide range of documents, including magazines, catalogs, letters and forms. >> Click to read more << Related PostsWhat is the cost of a paper roll used for making an A4 size paper?What is the size of A4 size paper?What size is International paper size?What is the size of A4 size paper in CM?What paper size is used in China?Which paper size is used in India?