Height of C1 paper size: 648 mm. = 64.8 cm.
Width of C1 paper size: 917 mm. = 91.7 cm.
Dimensions of C1 in mm: 648 x 917 mm.
Dimensions of C1 in cm: 64.8 x 91.7 cm.
Dimensions of C1 in inches: 25.51″ x 36.10″
Graphic file dimensions in pixels for 300 DPI printing: 7654 x 10831 px.
Graphic file dimensions in pixels for 72 DPI printing: 1837 x 2599 px.