ISO paper and card sizing

  • The dimensions of the A series paper sizes is defined by the ISO 216 standard. Each size moves by a half. For example A5 is half of A4 size paper and A2 is half of A1 size paper.
  • The following table gives the dimensions of A series paper sizes in inches and millimeters. It can be used to select the size of bag required to fit a common paper size.
  • Poly bags, grip seal bags and polypropylene bags have a 2-3mm size variation so choose a bag which is at least 5mm bigger than required.
  • All bag dimensions on the website have been listed in millimeters.
A Series Formats
ISO sizeSize
A0841 × 1189mm
33 × 46.75"
A1594 × 841mm
23.375 × 33"
A2420 × 594mm
16.5 × 23.375"
A3297 × 420mm
11.75 × 16.5"
A4210 × 297mm
8.25 × 11.75"
A5148 × 210mm
5.875 × 8.25"
A6105 × 148mm
4.125 × 5.875"
A774 × 105mm
2.875 × 4.125"
A852 × 74mm
2 × 2.875"
A937 × 52mm
1.5 × 2"
A1026 × 37mm
1 × 1.5"
  • The ISO standard paper size system covers a wide range of formats but not all of them are widely used in practice.
  • Among all formats, A4 is clearly the most important one for daily office use.
  • Some main applications of the most popular formats can be summarized as:
ISO sizeTypical usage
A0, A1Technical drawings, posters
A1, A2Flip charts
A2, A3Drawings, diagrams, large tables
A4Letters, magazines, forms, catalogs, laser printer and copying machine output
A5Note pads
A6Postcards
A5, A6Books
A3Newspapers, supported by most copying machines in addition to A4
A8Playing cards
B Series Formats
ISO sizeSize
B039.375 × 55.75"
B127.75 × 39.375"
B219.75 × 27.75"
B313.875 × 19.75"
B49.875 × 13.875"
B57 × 9.875"
B64.875 × 7"
B73.5 × 4.875"
B82.5 × 3.5"
B91.75 × 2.5"
B101.25 × 1.75"
C Series Formats
ISO sizeSize
C036 × 51"
C125.5 × 36"
C218 × 25.5"
C312.75 × 18"
C49 × 12.75"
C56.375 × 9"
C64.5 × 6.375"
C73.188 × 4.5"
C82.25 × 3.188"
C91.625 × 2.25"
C101.125 × 1.625"
  • The following table gives the dimension of common paper card sizes.
  • It can be used to select the size of bag required to fit a common card size.
  • Poly bags, grip seal bags and polypropylene bags have a 2-3mm size variation so choose a bag which is at least 5mm bigger than required.
Paper card sizing
Card sizeSize
C73.5 × 6"
C65 × 7"
C59 × 13"
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