Designation Trimmed Size Millimeters Inches 4A 1,682 by 2,378 66.22 by 93.62 2A 1,189 by 1,682 46.81 by 66.22 A0 841 by 1,189 33.11 by 46.81 A1 594 by 841 23.39 by 33.11 A2 420 by 594 16.54 by 23.39 A3 297 by 420 11.69 by 16.54 A4 210 by 297 8.27 by 11.69 A5 148 by 210 5.83 by 8.27 A6 105 by 148 4.13 by 5.83 A7 74 by 105 2.91 by 4.13 A8 52 by 74 2.05 by 2.91 A9 37 by 52 1.46 by 2.05 A10 26 by 37 1.05 by 1.46