International standard paper dimensions – ISO

In most part of the world the ISO standard is used for size of papers. The A-series is the most commonly used paper size and an international standard. The paper dimensions in both millimeters and inches.

A series paper sizes – ISO 216

Measurements of all A series papers.

  • A0 841 × 1189 mm 33.1 × 46.8 in
  • A1 594 × 841 mm 23.4 × 33.1 in
  • A2 420 × 594 mm 16.5 × 23.4 in
  • A3 297 × 420 mm 11.7 × 16.5 in
  • A4 210 × 297 mm 8.3 × 11.7 in
  • A5 148 × 210 mm 5.8 × 8.3 in
  • A6 105 × 148 mm 4.1 × 5.8 in
  • A7 74 × 105 mm 2.9 × 4.1 in
  • A8 52 × 74 mm 2.0 × 2.9 in
  • A9 37 × 52 mm1.5 × 2.0 in
  • A10 26 × 37 mm1.0 × 1.5 in

B series paper sizes – ISO 216

Measurements of all B series papers.

  • B0 1000 x 1414 mm39.4 × 55.7 in
  • B1 707 x 1000 mm27.8 × 39.4 in
  • B2 500 x 707 mm19.7 × 27.8 in
  • B3 353 x 500 mm13.9 × 19.7 in
  • B4 250 x 353 mm9.8 × 13.9 in
  • B5 176 x 250 mm6.9 × 9.8 in
  • B6 125 x 176 mm4.9 × 6.9 in
  • B7 88 x 125 mm3.5 × 4.9 in
  • B8 62 x 88 mm2.4 × 3.5 in
  • B9 44 x 62 mm1.7 x 2.4 in
  • B10 31 x 44 mm1.2 x 1.7 in

C series envelope sizes – ISO 269

Envelope sizes match papers in a-series. The C4 envelope is for example slightly bigger than an A4 paper.

Measurements of all C series envelopes.

  • C0 917 x 1297 mm36.1 x 51.5 in
  • C1 648 x 917 mm25.5 × 36.1 in
  • C2 458 x 648 mm18.0 x 25.5 in
  • C3 324 x 458 mm12.8 x 18.0 in
  • C4 229 x 324 mm9.0 × 12.8 in
  • C5 162 x 229 mm6.4 × 9.0 in
  • C6 114 x 162 mm4.5 × 6.4 in (used for folded A4)
  • C7 81 x 114 mm3.2 × 4.5 in
  • C8 57 x 81 mm2.2 × 3.2 in
  • C9 40 x 57 mm1.6 x 2.2 in
  • C10 28 x 40 mm1.1 x 1.6 in

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