A Paper Sizes

Further Information

The dimensions of the A series paper sizes are defined by the ISO 216 international paper size standard. The A series was adopted in Europe in the 19th century, and is currently used all around the world, apart from in the USA and Canada. The most common paper size used in English speaking countries around the world is A4, which is 210mm x 297mm (8.27 inches x 11.7 inches). The largest sheet from the A series is the A0 size of paper. It has an area of 1m2, and the dimensions are 841mm x 1189mm. The A series uses an aspect ratio of 1:√2, and other sizes in the series are defined by folding the paper in half, parallel to its smaller sides. For example, cutting an A4 in half, will create an 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. The standard lengths and widths of the A series are rounded to the nearest millimetre.

Format Width x Height (mm) Width x Height (in)
A0 841 x 1189 mm 33.11 x 46.811 in
A1 594 x 841 mm 23.386 x 33.11 in
A2 420 x 594 mm 16.535 x 23.386 in
A3 297 x 420 mm 11.693 x 16.535 in
A4 210 x 297 mm 8.268 x 11.693 in
A5 148 x 210 mm 5.827 x 8.268 in
A6 105 x 148 mm 4.134 x 5.827 in
A7 74 x 105 mm 2.913 x 4.134 in
A8 52 x 74 mm 2.047 x 2.913 in
A9 37 x 52 mm 1.457 x 2.047 in
A10 26 x 37 mm 1.024 x 1.457 in
2A0 1189 x 1682 mm 46.811 x 66.22 in
4A0 1682 x 2378 mm 66.22 x 93.622 in
A Paper Sizes A1 A2 A3 A4 A5 A6