C7 size
81 × 114 mm · 3.19 × 4.49 in · 229.6 × 323.1 pt
Where it comes from
Half of C6: the C6 sheet's long side (162 mm) halves and rounds down to 81 mm — ISO 216's halve-and-floor rule.
Source: Markus Kuhn — International standard paper sizes (CC BY 4.0)
Pixels at print resolutions
| DPI | Pixels (portrait) | Typical use |
|---|---|---|
| 72 | 230 × 323 | legacy screens |
| 96 | 306 × 431 | CSS reference |
| 150 | 478 × 673 | everyday print |
| 300 | 957 × 1346 | quality print |
| 600 | 1913 × 2693 | fine art / line work |