Below is a very helpful resource list to the more commonly used paper and envelope formats along with their size dimensions.
The following shows the width and height of all ISO A and B paper formats, as well as the ISO C envelope formats.
A Series Formats
4A0 – 1682mm x 2378mm
2A0 – 1189mm x 1682mm
A0 – 841mm x 1189mm
A1 – 594mm x 841mm
A2 – 420mm x 594mm
A3 – 297mm x 420mm
A4 – 210mm x 297mm
A5 – 148mm x 210mm
A6 – 105mm x 148mm
A7 – 74mm x 105mm
A8 – 52mm x 74mm
A9 – 37mm x 52mm
A10 – 26mm x 37mm
B Series Formats
B0 – 1000mm x 1414mm
B1 – 707mm x 1000mm
B2 – 500mm x 707mm
B3 – 353mm x 500mm
B4 – 250mm x 353mm
B5 – 176mm x 250mm
B6 – 125mm x 176mm
B7 – 88mm x 125mm
B8 – 62mm x 88mm
B9 – 44mm x 62mm
B10 31mm x 44mm
C Series Formats
C0 – 917mm x 1297mm
C1 – 648mm x 917mm
C2 – 458mm x 648mm
C3 – 324mm x 458mm
C4 – 229mm x 324mm
C5 – 162mm x 229mm
C6 – 114mm x 162mm
C7 – 81mm x 114mm
C8 – 57mm x 81mm
C9 – 40mm x 57mm
C10 – 28mm x 40mm
Envelope Formats – along with their proposed content format
C6 – 114mm x 162mm – A4 folded twice = A6
DL – 110mm x 220mm – A4 folded twice = 1/3 A4
C6/C5 – 114mm x 229mm – A4 folded twice = 1/3 A4
C5 – 162mm x 229mm – A4 folded once = A5
C4 – 229mm x 324mm – A4
C3 – 324mm x 458mm – A3
B6 – 125mm x 176mm – C6 Envelope
B5 – 176mm x 250mm – C5 Envelope
B4 250mm x 353mm – C4 Envelope
E4 – 280mm x 400mm – B4
Untrimmed Paper Formats – All A and B series formats described previously are trimmed paper end sizes – i.e. the size when delivered to the end user or client. Other ISO standards define the format series RA and SRA for untrimmed raw paper which is normally the size when received by the printers. These sizes are useful to know when planning up your print projects.
RA Series Formats
RA0 – 860mm x 1220mm
RA1 – 610mm x 860mm
RA2 – 430mm x 610mm
RA3 – 305mm x 430mm
RA4 – 215mm x 305mm
SRA Series Formats
SRA0 – 900mm x 1280mm
SRA1 – 640mm x 900mm
SRA2 – 450mm x 640mm
SRA3 – 320mm x 450mm
SRA4 – 225mm x 320mm
