B3 size
353 × 500 mm · 13.9 × 19.69 in · 1000.6 × 1417.3 pt
Where it comes from
Half of B2: the B2 sheet's long side (707 mm) halves and rounds down to 353 mm — ISO 216's halve-and-floor rule.
Derived from the ISO 216 construction — no lookup required, only arithmetic.
Pixels at print resolutions
| DPI | Pixels (portrait) | Typical use |
|---|---|---|
| 72 | 1001 × 1417 | legacy screens |
| 96 | 1334 × 1890 | CSS reference |
| 150 | 2085 × 2953 | everyday print |
| 300 | 4169 × 5906 | quality print |
| 600 | 8339 × 11811 | fine art / line work |