A Paper Sizes


About A Paper Sizes


A series paper sizes and dimensions are defined by the ISO 216 international paper size standard. The A series is comman and world wide used paper size. The base A0 size of paper is defined as having an area of 1 m2 and a dimension ratio of 1 to √2. Successive paper sizes in the series A1, A2, A3, and so forth, are defined by halving the preceding paper size across the larger dimension. This also effectively halves the area of each sheet. The most frequently used paper size is A4 measuring 210 by 297 millimetres (8.27 in × 11.7 in). The standard dimensions are rounded to the nearest millimetre.

A Paper Sizes
Format Width × Height (mm) Width × Height (in)
A0 841 x 1189 mm 33.1 x 46.8 in
A1 594 x 841 mm 23.4 x 33.1 in
A2 420 x 594 mm 16.5 x 23.4 in
A3 297 x 420 mm 11.7 x 16.5 in
A4 210 x 297 mm 8.3 x 11.7 in
A5 148 x 210 mm 5.8 x 8.3 in
A6 105 x 148 mm 4.1 x 5.8 in
A7 74 x 105 mm 2.9 x 4.1 in
A8 52 x 74 mm 2 x 2.9 in
A9 37 x 52 mm 1.5 x 2 in
A10 26 x 37 mm 1 x 1.5 in
A11 18 x 26 mm 0.7 x 1 in
A12 13 x 18 mm 0.5 x 0.7 in
A13 9 x 13 mm 0.4 x 0.5 in
2A0 1189 x 1682 mm 46.8 x 66.2 in
4A0 1682 x 2378 mm 66.2 x 93.6 in
A0+ 914 x 1292 mm 36 x 50.9 in
A1+ 609 x 914 mm 24 x 36 in
A3+ 329 x 483 mm 12.9 x 19 in

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