C Paper Sizes

All C paper sizes, formats, information and dimension in mm, cm, m, inches, points, picas and pixels. The C category has a total of 11 paper sizes.


C0
36.1 x 51.1 in
C1
25.5 x 36.1 in
C2
18 x 25.5 in
C3
12.8 x 18 in
C4
9 x 12.8 in
C5
6.4 x 9 in
C6
4.5 x 6.4 in
C7
3.2 x 4.5 in
C8
2.2 x 3.2 in
C9
1.6 x 2.2 in
C10
1.1 x 1.6 in
Information

Unlike A and B series, the dimensions of the C series paper sizes are defined by the ISO 269 international paper size standard. One great use of this series is for envelopes. The height and width of a Cn format area is the geometric mean between the A and B series paper sizes of the same number. This means that C4 is between A4 and B4 in size. This also means that the paper size A4 will fit into a C4 envelope. Just like the A series and the B series, the C Series also has an aspect ratio of 1:√2 and because of this reason, an A4 paper size when folded in half, will fit perfectly into a C5 envelope. If instead you try to fold it twice, it will fit into a C6 envelope, and on and on.


Format Width x Height (mm) Width x Height (inch) Width x Height (px)
C0 917 x 1297 36.1 x 51.1 10831 x 15319
C1 648 x 917 25.5 x 36.1 7654 x 10831
C2 458 x 648 18 x 25.5 5409 x 7654
C3 324 x 458 12.8 x 18 3827 x 5409
C4 229 x 324 9 x 12.8 2705 x 3827
C5 162 x 229 6.4 x 9 1913 x 2705
C6 114 x 162 4.5 x 6.4 1346 x 1913
C7 81 x 114 3.2 x 4.5 957 x 1346
C8 57 x 81 2.2 x 3.2 673 x 957
C9 40 x 57 1.6 x 2.2 472 x 673
C10 28 x 40 1.1 x 1.6 331 x 472