Paper Sizes
 

Just how big is A2 paper? Do I need a C5 envelope or a C6? What are the standard poster sizes?

The answer to all these questions are on this page.

We'll start with a helpful diagram:

 

  

SO Sizes - Trimmed Stock
'A' Range:   'B' Range:
The 'A' Range is the finished trimmed size of paper used in printing and related industries.   The 'B' range covers a need for special applications, such as oversize documents and posters.
A7 105mm x 74mm
A6 148mm x 105mm
A5 210mm x 148mm
A4 297mm x 210mm
A3 420mm x 297mm
A2 594mm x 420mm
A1 841mm x 594mm
A0 1189mm x 841mm
 
B7 125mm x 88mm
B6 176mm x 125mm
B5 250mm x 176mm
B4 353mm x 250mm
B3 500mm x 353mm
B2 707mm x 500mm
B1 1000mm x 707mm
B0 1414mm x 1000mm
     
'C' Range - Envelope Sizes:   American Quarto:
Connected to both envelopes and folders, the 'C' range allows 'A' sized items to be inserted   American Quarto is normally used by USA based companies and is generally stated in inches.
C8 81mm x 57mm
C7 114mm x 81mm
C6 162mm x 114mm
C5 229mm x 162mm
C4 324mm x 229mm
 
11" x 8.5" (280mm x 216mm)

 
     
ISO Sizes - Untrimmed Stock:   RA Sheet Sizes:
Known as the supplementary range, this sheet size offers greater flexibility in allowing for bleed, machine handling and finishing.   The 'RA' range allows for a 5% waste when finally trimmed. This range is not widely stocked due to the limitations in application.
SRA6 160mm x 112mm
SRA5 225mm x 160mm
SRA4 320mm x 225mm
SRA3 450mm x 320mm
SRA2 640mm x 450mm
SRA1 900mm x 640mm
SRA0 1280mm x 900mm
 
RA6 152mm x 107mm
RA5 215mm x 152mm
RA4 305mm x 215mm
RA3 430mm x 305mm
RA2 610mm x 430mm
RA1 860mm x 610mm
RA0 1220mm x 860mm
     
Classic Series:    
Large Post 419mm x 533mm
Demy 444mm x 572mm
Medium 457mm x 584mm
Royal 508mm x 635mm
Double Crown 508mm x 762mm