Maybe A4 (not heard of A2). It is the metric version of our standard 8.5" x 11", but slightly bigger. It measures 8.25 x 11.75" Most applications allow you to choose "print full size" and it will automatically cut off some of the blank margin so it fits. If the size of the print isn't a big deal, you can choose "fit to page" and it will print, just a little smaller.