C4 Paper Size, Dimensions and Format (C series)


229 x 324




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


The C4 format measures 229 x 324 mm or 9 x 12.8 inches. An C4 paper fromat has an aspect ratio of 1:1.41. The Area of the C4 paper size is 74,196 mm² or 115.20 in² with a perimeter of 1,106 mm or 43.60 in. An C4 format has a diagonal length of 396.76 mm or 15.65 in. The C4 size belongs to the C series. In the C series there are a total of 11 paper sizes.

Frequently Asked Questions

The size of an C4 paper is 229 x 324 mm

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

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

The aspect ratio of an C4 is 1:1.41

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

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

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

Other C Paper Sizes →

There are a total of 11 C Paper Sizes.