What is A1 paper?

Answer:
A1 paper is the second largest standard uniform size of paper.
A0 paper has a area of 1 square meter.
A1 has a size of 59.46 x 84.09 cm.
Its half the size of A0 and twice the size of A3 which is twice the size of A4.
Contributor: Gethin
First answer by Gethin Neagle. Last edit by Gethin Neagle. Contributor trust: 2 [recommend contributor recommended]. Question popularity: 3 [recommend question].