What are the "A" paper sizes?

The "A" system of paper sizes is defined in International Standard ISO 216. The largest size, A0, was set so that its area is 1 square metre and all sizes have an aspect ratio of width to length of 1 to the square root of 2 (1.414). Therefore, if an A0 sheet is folded in half across its width, the resultant size is A1 and so on.

The table below summarises the sizes:

Sizelengthwidth
A01189841
A1841594
A2594420
A3420297
A4297210
A5210148
A6148105
A710574

Testimonials ( 4898 )
(5,0/5)

Review By Row,
Had a problem with an item (product fault) but it was rectified promptly! Very happy with the servic ...
06-01-2021
Review By Ray Neal,
Just brilliant service with quick delivery and so well packed that I don't worry about ink bottles g ...
05-01-2021
Review By claudia barcellos,
The store is excellent, customer service and products that I could not find anywhere. I became a reg ...
04-01-2021
Verified Purchase