Dimensions of A3 format

A series of paper sizes is defined by ISO 2016.

The height divided by the width of all formats
of A, B and C series is the square root of two (1.4142).

Height of A3 format: 420 mm = 42,0 cm
Width of A3 format: 297 mm = 29,7 cm

Dimensions of A3 format in mm: 297 x 420 mm
Dimensions of A3 format in cm: 29,7 x 42,0 cm
Dimensions of A3 format in inches: 11,69" x 16,54"

Print ready file dimensions in pixels at 300 DPI: 3 508 x 4 961 px
Print ready file dimensions in pixels at 72 DPI: 842 x 1 191 px