C4 envelope size
229 × 324 mm · 9.02 × 12.76 in · 649.1 × 918.4 pt
Where it comes from
C4 (229 × 324 mm) used as an envelope: an A4 sheet slides in unfolded, an A3 folded once.
Source: Markus Kuhn — International standard paper sizes (CC BY 4.0)
Pixels at print resolutions
| DPI | Pixels (portrait) | Typical use |
|---|---|---|
| 72 | 649 × 918 | legacy screens |
| 96 | 866 × 1225 | CSS reference |
| 150 | 1352 × 1913 | everyday print |
| 300 | 2705 × 3827 | quality print |
| 600 | 5409 × 7654 | fine art / line work |
The family
- Fold DL envelope in half and you're holding C4 envelope.
- Fold C4 envelope in half and you get C5 envelope — two of those side by side rebuild this sheet.
- Area: 0.0742 m².