RA1 size

610 × 860 mm · 24.02 × 33.86 in · 1729.1 × 2437.8 pt

Where it comes from

Half of RA0: the RA0 sheet's long side (1220 mm) halves and rounds down to 610 mm — ISO 216's halve-and-floor rule.

Source: Markus Kuhn — International standard paper sizes (CC BY 4.0)

Pixels at print resolutions

DPIPixels (portrait)Typical use
721729 × 2438legacy screens
962306 × 3250CSS reference
1503602 × 5079everyday print
3007205 × 10157quality print
60014409 × 20315fine art / line work

The family

  • Fold RA0 in half and you're holding RA1.
  • Fold RA1 in half and you get RA2 — two of those side by side rebuild this sheet.
  • Area: 0.5246 m².
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