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A_A , 1 month ago Size Width (mm) Height (mm) Width (in) Height (in) A0 841 1189 33.1 46.7 A1 594 841 23.4 33.1 A2 420 594 16.5 23.4 A3 297 420 11.7 16.5 A4 210 297 8.3 11.7 en.m.wikipedia.org/wiki/ISO_216
en.m.wikipedia.org/wiki/ISO_216