A3 (International paper size: A), paper size

The international paper size standard, ISO 216, is based on the German DIN 476 standard for paper sizes. Using the metric system, the base format is a sheet of paper measuring 1 m² in area (A0 paper size). Successive paper sizes in the series A1, A2, A3, etc., are defined by halving the preceding paper size parallel to its shorter side. The most frequently used paper size is A4 (210 × 297 mm).

Type the number of A3 you want to convert in the text box, to see the results in the table.

Switch conversion Convert

is equal to

International paper size: A

International paper size: B

International paper size: C

Japanese paper sizes