What is the size of A1 paper?

The size of A1 paper is double the size of A2. It is like two A2 papers side by side.

The size of A1 paper in cm is: 59.4 x 84.1

The size of A1 paper in inches is: 23.4 x 33.1

A1 is the second biggest size of A series papers. It is used very rarely, only for posters. There is only a bigger size named A0, 84.1cm x 118.9cm.

This kind of sheets are very expensive and used only by professionals. In general the pack of 40 sheets its sold for 15$ and that’s for the low quality.