What is the standard paper size for a4 pitch and how does it compare to other paper sizes?

The standard paper size for A4 is 8.27 x 11.69 inches. It is slightly longer and narrower than the standard US letter size paper, which is 8.5 x 11 inches. A4 paper is also taller and narrower than the standard legal size paper, which is 8.5 x 14 inches.