Compare C4M Dimensions
Compare C4M size (International Envelope Paper Sizes) side-by-side with other international formats and reference objects.
Paper Sizing Converters
C4M
229 mm × 318 mm
229 mm
Letter
216 mm × 279 mm
216 mm
Credit Card
86 mm
Aspect Ratio
1 : 1.39
Primary format (C4M). Comparison aspect ratio is 1 : 1.29.
Digital Output Pixels
2705 px × 3756 px
300 DPI