International Envelope Paper Sizes
All International Envelope paper sizes, formats, information and dimension in mm, cm, m, inches, points, picas and pixels. The International Envelope category has a total of 12 paper sizes.
ISO 269 is the international standard which defines the Standard Envelope sizes. They are often made to be used together with paper sizes that follow the ISO 216 standard. The C series is the most commonly used envelope size. In a C4 envelope, you can fit an A4 paper format. The DL envelope or ‘Dimension Lengthwise’ or as previously known as DIN Lang in Germany where it originated in the 1920s, it does not appear in the C series because of the different aspect ratio it has to the C series. You can fit an A4 piece of paper which is folded three times very nicely into a DL envelope.
|Format||Width x Height (mm)||Width x Height (inch)||Width x Height (px)|
|C3 Envelope||458 x 324||18 x 12.8||5409 x 3827|
|E4 Envelope||400 x 280||15.7 x 11||4724 x 3307|
|B4 Envelope||353 x 250||13.9 x 9.8||4169 x 2953|
|C4 Envelope||324 x 229||12.8 x 9||3827 x 2705|
|B5 Envelope||250 x 176||9.8 x 6.9||2953 x 2079|
|C6/C5 Envelope||229 x 114||9 x 4.5||2705 x 1346|
|C5 Envelope||229 x 162||9 x 6.4||2705 x 1913|
|DL Envelope||220 x 110||8.7 x 4.3||2598 x 1299|
|B6 Envelope||176 x 125||6.9 x 4.9||2079 x 1476|
|C7/C6 Envelope||162 x 81||6.4 x 3.2||1913 x 957|
|C6 Envelope||162 x 114||6.4 x 4.5||1913 x 1346|
|C7 Envelope||114 x 81||4.5 x 3.2||1346 x 957|