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.
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|