Paper Sizes

Our paper sizes are based on the ISO216 international paper size standard. This standard is based on each size being half of the size of the previous one, when folded parallel to the shorter lengths. This paper size guide will give you all the information you need on popular paper sizes from the UK and Europe.
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“A” paper sizes

The most typical sizes for finished printed documents are A3, A4, A5 an A6. Cutting an A4 in half, will create two A5 sheets, and so forth. Any size of brochure can be made using paper from the next larger size, for example A3 sheets are folded to make A4 brochures.

FormatWidth x Height (mm)Width x Height (in)
A0841 × 1189 mm33.1 × 46.8 in
A1594 × 841 mm23.4 × 33.1 in
A2420 × 594 mm16.5 × 23.4 in
A3297 × 420 mm11.7 × 16.5 in
A4210 × 297 mm8.3 × 11.7 in
A5148 × 210 mm5.8 × 8.3 in
A6105 × 148 mm4.1 × 5.8 in
A774 × 105 mm2.9 × 4.1 in
A852 × 74 mm2 × 2.9 in

“B” paper sizes

“B” size paper is the geometric mean of the A series sheets. For example, B1 is between A0
and A1 in size. While the B series is less common in finished print products, printers use
these sizes to achieve maximum economy when planning jobs up on a sheet.

FormatWidth x Height (mm)Width x Height (in)
B01000 × 1414 mm39.4 × 55.7 in
B1707 × 1000 mm27.8 × 39.4 in
B2500 × 707 mm19.7 × 27.8 in
B3353 × 500 mm13.9 × 19.7 in
B4250 × 353 mm9.8 × 13.9 in
B5176 × 250 mm6.9 × 9.8 in
B6125 × 176 mm4.9 × 6.9 in
B788 × 125 mm3.5 × 4.9 in
B862 × 88 mm2.4 × 3.5 in

“C” paper sizes

“C” sized paper is most commonly used for envelopes, although there are some other uses. The area of C series paper is the geometric mean of the areas of the A and B series paper of the same number. For example, C4 has a bigger area than A4, but smaller area than B4. Therefore an A4 piece of paper will fit into a C4 envelope and so forth.

FormatWidth × Height (mm)Width × Height (in)
C0917 × 1297 mm36.1 × 51.1 in
C1648 × 917 mm25.5 × 36.1 in
C2458 × 648 mm18 × 25.5 in
C3324 × 458 mm12.8 × 18 in
C4229 × 324 mm9 × 12.8 in
C5162 × 229 mm6.4 × 9 in
C6114 × 162 mm4.5 × 6.4 in
C781 × 114 mm3.2 × 4.5 in
C857 × 81 mm2.2 × 3.2 in

Untrimmed paper sizes

The dimensions of all “RAW sized” paper are defined by the ISO217 international paper sizstandard. The format consists of the SRA series amongst others. SRA stands for “Supplementary Raw Format A”. The untrimmed paper is usually used in commercial printing and as it is slightly larger than the A series format. This allows the ink to bleed to the edge of the paper, before being cut to match the A format aswell as being extremely useful when printing high numbers of smaller items on a sheet before trimming.

FormatWidth × Height (mm)Width × Height (in)
SRA0900 × 1280 mm35.4 × 50.4 in
SRA1640 × 900 mm25.2 × 35.4 in
SRA1+660 × 920 mm26 × 36.2 in
SRA2450 × 640 mm17.7 × 25.2 in
SRA2+480 × 650 mm18.9 × 25.6 in
SRA3320 × 450 mm12.6 × 17.7 in
SRA3+320 × 460 mm12.6 × 18.1 in
SRA3++320 × 464 mm12.6 × 18.3 in