C3

Envelope for unfolded A3 sheets.

C Envelopes / 324 x 458 mmBack to Family

Dimensions in inches and centimeters

Portrait

12.76 in x 18.03 in

32.40 cm x 45.80 cm

Landscape

18.03 in x 12.76 in

45.80 cm x 32.40 cm

Dimensions Table

Specs

Swipe to see all measurements

Orientation	Millimeters	Inches	Pixels (300 dpi)
Portrait	324 x 458	12.76 in x 18.03 in	3827 px x 5409 px
Landscape	458 x 324	18.03 in x 12.76 in	5409 px x 3827 px

Deep Dive

C3 measures 324 x 458 mm (32.40 x 45.80 cm).
Total surface area is 148,392 mm² (230.01 in²).
Approximate diagonal is 22.09 inches, useful when checking fit inside sleeves or packaging.
Designed to pair efficiently with folded and unfolded A-series documents.