a1 paper size

The a1 paper size is the same size as:

  • half a0,
  • two a2 or
  • four a3.

Size of paper a1

  • A1 paper size in millimetres is 420 x 594 mm.
  • A1 paper size in inches is 16.5 x 23.4 in

More A papers

See all paper sizes in A series.