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

DPIPixels (portrait)Typical use
721001 × 1417legacy screens
961334 × 1890CSS reference
1502085 × 2953everyday print
3004169 × 5906quality print
6008339 × 11811fine art / line work

The family

  • Fold B2 in half and you're holding B3.
  • Fold B3 in half and you get B4 — two of those side by side rebuild this sheet.
  • Area: 0.1765.