Understanding UK Paper and Enevelope Sizes

Please find a broad overview of the British printing industry sizes we often refer to and use.

A Sizes

Common Paper Sizes e.g. A4 is used for letterheads

B Sizes

Less Common Paper Sizes e.g. B format is often used for large posters

C Sizes

These refer to envelopes

and are commonly used with A sized papers. e.g. an A4 sheet requires an C4 envelope

The A Series

Table of Paper Sizes From 4A0 to A10

Size        Width x Height (mm)

4A0        1682 x 2378 mm               

2A0        1189 x 1682 mm               

A0           841 x 1189 mm 

A1           594 x 841 mm    

A2           420 x 594 mm    

A3           297 x 420 mm    

A4           210 x 297 mm    

A5           148 x 210 mm    

A6           105 x 148 mm

A7           74 x 105 mm      

A8           52 x 74 mm        

A9           37 x 52 mm        

 A10        26 x 37 mm

The B Series

Table of Paper Sizes From B0 to B10

Size        Width x Height (mm)

B0           1000 x 1414 mm               

B1           707 x 1000 mm 

B2           500 x 707 mm    

B3           353 x 500 mm    

B4           250 x 353 mm    

B5           176 x 250 mm    

B6           125 x 176 mm    

B7           88 x 125 mm      

B8           62 x 88 mm        

B9           44 x 62 mm        

B10         31 x 44 mm        

The C Series

Table of Envelope Sizes From C0 to C10

Size        Width x Height (mm)     

C0           917 x 1297 mm 

C1           648 x 917 mm    

C2           458 x 648 mm    

C3           324 x 458 mm    

C4           229 x 324 mm    

C5           162 x 229 mm    

C6           114 x 162 mm    

C7           81 x 114 mm

C8           57 x 81 mm        

C9           40 x 57 mm        

C10         28 x 40 mm        

If you are interested in reading more about paper, paper weights and stocks then we thoroughly recommend you start at this excellent web resource Paper Sizes and Formats

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