A1 size

594 × 841 mm · 23.39 × 33.11 in · 1683.8 × 2383.9 pt

Where it comes from

Half of A0: the A0 sheet's long side (1189 mm) halves and rounds down to 594 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
721684 × 2384legacy screens
962245 × 3179CSS reference
1503508 × 4967everyday print
3007016 × 9933quality print
60014031 × 19866fine art / line work

The family

  • Fold A0 in half and you're holding A1.
  • Fold A1 in half and you get A2 — two of those side by side rebuild this sheet.
  • Area: 0.4996 m² — an 80 gsm sheet weighs 39.97 g.
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