Compare C8 Dimensions
Compare C8 size (C Envelope Paper Sizes) side-by-side with other international formats and reference objects.
Paper Sizing Converters
C8
57 mm × 81 mm
57 mm
Letter
216 mm × 279 mm
216 mm
Credit Card
86 mm
Aspect Ratio
1 : 1.41 (√2)
Primary format (C8). Comparison aspect ratio is 1 : 1.29.
Digital Output Pixels
673 px × 957 px
300 DPI