500 sheets
Also know, do two A4 sheets make A3?
An A3 sheet measures 420mm x 297mm. so to move up a size 210 x 2 = 420. This gives an A3 sheet the flat size equivalent of exactly 2 A4 sheets. … You will notice that this is exactly the same size as 2 A3 sheets or 4 A4 sheets.
Moreover, how many reams are in a box of A3 paper? It’s A3 size which makes it ideal for larger printing applications. There are 500 sheets in each ream. It has a CIE Whiteness of 165 for black and white and colour printing. There are 3 reams in this carton.