The most commonly used format in this series is A4, which is essentially the equivalent of U.S. letter-sized paper. The A4 sheet It is 297 millimeters by 210 millimeters, which is 8.3 inches by 11 ...

The effective reduction in paper size is 10% (330mm x 210mm for legal versus 297mm x 210 mm for A4), but the use of both sides for printing will potentially cut down paper consumption by half, a ...