UK Envelope Sizes in mm, inches and pixels.
The C-series consists of the most common set of envelope sizes that are used in the UK, the most common sizes being DL, C5 and C6.
You can see below a list of the sizes in mm, inches and pixels:
UK Envelope Sizes in MM
DL 110 x 220 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
UK Envelope Sizes in Inches
DL 4.3 x 8.6 in
C1 25.5 x 36.1 in
C2 18.0 x 25.5 in
C3 12.8 x 18.0 in
C4 9.0 x 12.8 in
C5 6.4 x 9.0 in
C6 4.5 x 6.4 in
C7 3.2 x 4.5 in
C8 2.2 x 3.2 in
C9 1.6 x 2.2 in
C10 1.1 x 1.6 in
UK Envelope Sizes in Pixels
DL 311 x 623 px
C1 1836 x 2599 px
C2 1298 x 1836 px
C3 918 x 1298 px
C4 649 x 918 px
C5 459 x 649 px
C6 323 x 459 px
C7 229 x 323 px
C8 161 x 229 px
C9 113 x 161 px
C10 79 x 113 px
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