A4 Paper Size



mm :

210 x 297 mm

cm :

21 × 29.7 cm

inches :

8.3 × 11.7 inches


Aspect ratio :


Area :

62,370 mm²

Perimeter :

1,014 mm

Diagonal :

363.74 mm

A4 paper is part of the ISO 216 standard and is typically used for a wide range of documents, including magazines, catalogs, letters and forms. A4 is used everywhere except for North America and parts of Latin America. The size of A4 paper measures 210 x 297 millimeters. It is the fifth largest sized paper in the A Series and is exactly half the size of A3 paper.

Other A Paper Sizes