Dimensions of A9 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 A9 format: 52 mm = 5,2 cm
Width of A9 format: 37 mm = 3,7 cm

Dimensions of A9 format in mm: 37 x 52 mm
Dimensions of A9 format in cm: 3,7 x 5,2 cm
Dimensions of A9 format in inches: 1,46" x 2,05"

Print ready file dimensions in pixels at 300 DPI: 437 x 614 px
Print ready file dimensions in pixels at 72 DPI: 105 x 147 px