C4 Envelope Paper Size, Dimensions and Format (International Envelope series)

C4 Envelope in millimeters

324 x 229


C4 Envelope-paper-size


Aspect ratio 1.41:1
Area (A) 74,196 mm²
Perimeter (P) 1,106 mm
Diagonal (d) 396.76 mm


The C4 Envelope format measures 324 x 229 mm or 12.8 x 9 inches. An C4 Envelope paper fromat has an aspect ratio of 1.41:1. The Area of the C4 Envelope paper size is 74,196 mm² or 115.20 in² with a perimeter of 1,106 mm or 43.60 in. An C4 Envelope format has a diagonal length of 396.76 mm or 15.65 in. The C4 Envelope size belongs to the International Envelope series. In the International Envelope series there are a total of 12 paper sizes.

Frequently Asked Questions:

The size of an C4 Envelope paper is 324 x 229 mm

The size of an C4 Envelope paper in inches is 12.8 x 9 in

The half size of an C4 Envelope paper is 162 x 114.5 mm or 6.4 x 4.5 in

The aspect ratio of an C4 Envelope is 1.41:1

The area of an C4 Envelope paper is 74,196 mm or 115.20 in

The perimeter of an C4 Envelope paper is 1,106 mm or 43.60 in

The diagonal measurement of C4 Envelope paper is 396.76 mm or 15.65 in

Other International Envelope Paper Sizes

There are a total of 12 International Envelope Paper Sizes.