Papers in the A series format have a 1:√2 aspect ratio – it keeps the ratio the same for each size after cutting a larger sheet in half.

Half a sheet of A4 = A5
Two sheets of A4 = A3
Four sheets of A4 = A2
Eight sheets of A4 = A1
Sixteen sheets of A4 - A0

International paper size chart

International paper sizes are governed by ISO 216 (A and B sheets, plus the German DIN 476 for the 'overformats' 2A0 and 4A0); ISO 217 (for the RA and SRA sheets) and ISO 269 (C series for envelopes, which is also part of DIN 678).

For background details about international paper sizes, please consult the sources listed right under the illustration.

 

 

 

 

 


 

 

 

Every size for every common paper size

We've compiled this table of international paper sizes – all the A, B, RA and SRA series sheet sizes plus C series envelopes and popular roll sizes.

Just click on the graphic to download a PDF of it – it includes the chart on the left and A4 dimension variants.

International paper sizes

Now, what message do you want to put on the paper?  Talk to Buzz Associates on 01767 651115... today.

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