Standard International Paper Sizes.
A0 - 841 x 1189mm (33.11 x 46.81 inches)
A1 - 594 x 841mm (23.39 x 33.11 inches)
A2 - 420 x 594mm (16.54 x 23.39 inches)
A3 - 297 x 420mm (11.69 x 16.54 inches)
A4 - 210 x 297mm (8.27 x 11.69 inches
A5 - 148 x 210mm (5.83 x 8.27 inches)
Other Common Paper Sizes.
B0 - 1000 x 1414mm (39.37 x 55.67 inches)
B1 - 707 x 1000mm (27.83 x 39.37 inches)
B2 - 500 x 707mm (19.68 x 27.83 inches)
B3 - 353 x 500mm (13.90 x 19.68 inches)
B4 - 250 x 353mm (9.84 x 13.90 inches)
DL - 99 x 210mm (3.87 x 8.27 inches)
Crown - 412.8 x 533.4mm (16.25 x 21 inches)
Double Crown - 508 x 762mm (20 x 30
inches)
4 Sheet - 1016 x 1524mm (40 x 60 inches)
6 Sheet - 1200 x 1800mm (47.25 x 70.87
inches) Theatre posters
48 Sheet - 3048 x 6096mm (120 x 240
inches) Billboard posters