SRA3 size
320 × 450 mm · 12.6 × 17.72 in · 907.1 × 1275.6 pt
Where it comes from
Half of SRA2: the SRA2 sheet's long side (640 mm) halves and rounds down to 320 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 | 907 × 1276 | legacy screens |
| 96 | 1209 × 1701 | CSS reference |
| 150 | 1890 × 2657 | everyday print |
| 300 | 3780 × 5315 | quality print |
| 600 | 7559 × 10630 | fine art / line work |
The family
- Fold SRA2 in half and you're holding SRA3.
- Area: 0.144 m².