C10 size
28 × 40 mm · 1.1 × 1.57 in · 79.4 × 113.4 pt
Where it comes from
Half of C9: the C9 sheet's long side (57 mm) halves and rounds down to 28 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 | 79 × 113 | legacy screens |
| 96 | 106 × 151 | CSS reference |
| 150 | 165 × 236 | everyday print |
| 300 | 331 × 472 | quality print |
| 600 | 661 × 945 | fine art / line work |
The family
- Fold C9 in half and you're holding C10.
- Area: 0.0011 m².