C1 Paper Size
C1 is a format in the C series paper, and the C series paper is a series of commonly used papers in the ISO 216 international paper standard, the C series formats are geometric means between the B series and A series formats with the same number (e.g., C2 is the geometric mean between B2 and A2), it mainly used for envelopes. The width of the C1 paper is 648mm(25.5 inches) and the height is 917mm(36.1 inches).
| Format/name | C1 |
|---|---|
| Width(mm) | 648 mm |
| Width(in) | 25.5 inches |
| Height(mm) | 917 mm |
| Height(in) | 36.1 inches |
Taking our commonly used credit cards as a reference, the size of the credit card is 85.6 mm x 53.98 mm (3.4 in X 2.1 in). The paper size of C1 format is approximately 7.6 times the width of the credit card and approximately 17 times the height of the credit card.
ISO 216 is an international standard is a universal standard all over the world except in North America (the United States and Canada) and parts of Latin America.
C Series Paper Size
| Format | Width × Height (mm) | Width × Height (cm) | Width × Height (in) |
|---|---|---|---|
| C0 | 917 × 1297 mm | 91.7 × 129.7 cm | 36.1 × 51.1 in |
| C1 | 648 × 917 mm | 64.8 × 91.7 cm | 25.5 × 36.1 in |
| C2 | 458 × 648 mm | 45.8 × 64.8 cm | 18 × 25.5 in |
| C3 | 324 × 458 mm | 32.4 × 45.8 cm | 12.8 × 18 in |
| C4 | 229 × 324 mm | 22.9 × 32.4 cm | 9 × 12.8 in |
| C5 | 162 × 229 mm | 16.2 × 22.9 cm | 6.4 × 9 in |
| C6 | 114 × 162 mm | 11.4 × 16.2 cm | 4.5 × 6.4 in |
| C7 | 81 × 114 mm | 8.1 × 11.4 cm | 3.2 × 4.5 in |
| C8 | 57 × 81 mm | 5.7 × 8.1 cm | 2.2 × 3.2 in |
| C9 | 40 × 57 mm | 4 × 5.7 cm | 1.6 × 2.2 in |
| C10 | 28 × 40 mm | 2.8 × 4 cm | 1.1 × 1.6 in |
