US Envelope Sizes & Format Guide
How do you know which US envelope format you need?
Commercial envelopes are long and thin similar to the international DL envelope, announcement envelopes are rectangular simlar to a C4 envelope and catalogue envelopes are larger and heavy duty being suitable for delivery of catalogues and brochures which is how they got their name.
Announcement Envelopes
Announcement envelopes are commonly used for greeting cards and invitations.
The table below shows common sizes of announcement envelopes, along with the dimensions of them in inches and millimetres:
| Size | Height x Width (in) | Height x Width (mm) |
|---|---|---|
| Lady Grey (A2) | 4.375 x 5.75 | 111 x 146 |
| Thompson's Standard (A6) | 4.75 x 6.5 | 121 x 165 |
| Besselheim (A7) | 5.25 x 7.25 | 133 x 184 |
| Carr's (A8) | 5.5 x 8.125 | 140 x 206 |
| Diplomat (A9) | 5.75 x 8.75 | 146 x 222 |
| Willow (A10) | 6.0 x 9.5 | 152 x 241 |
Commercial Envelopes
Image from Office Depot.
Commercial envelopes are long and thin, commonly used for business correspondance.
The table below shows common sizes of commercial envelopes, along with the dimensions of them in inches and millimetres:
| Size | Height x Width (in) | Height x Width (mm) |
|---|---|---|
| 6¼ | 3.5 x 6.0 | 89 x 152 |
| 6¾ | 3.625 x 6.5 | 92 x 165 |
| 7 | 3.75 x 6.75 | 95 x 172 |
| 7¾ | 3.875 x 7.5 | 98 x 191 |
| 8 5/8 | 3.625 x 8.625 | 92 x 219 |
| 9 | 3.875 x 8.875 | 98 x 225 |
| 10 | 4.125 x 9.5 | 105 x 241 |
| 11 | 4.5 x 10.375 | 114 x 264 |
| 12 | 4.75 x 11.0 | 121 x 279 |
| 14 | 5.0 x 11.5 | 127 x 292 |
| 16 | 6.0 x 12.0 | 152 x 305 |
Catalogue Envelopes
Catalogue envelopes are larger heavy duty envelopes suitable for brochures and catalogues, they are simlar in shape to announcement envelopes.
The table below shows common sizes of catalogue envelopes, along with the dimensions of them in inches and millimetres:
| Size | Height x Width (in) | Height x Width (mm) |
| 1 | 6.0 x 9.0 | 152 x 229 |
| 1¾ | 6.5 x 9.5 | 165 x 241 |
| 3 | 7.0 x 10.0 | 178 x 254 |
| 6 | 7.5 x 10.5 | 191 x 267 |
| 8 | 8.25 x 11.25 | 210 x 286 |
| 9¾ | 8.75 x 11.25 | 222 x 286 |
| 10½ | 9.0 x 12.0 | 229 x 305 |
| 12½ | 9.5 x 12.5 | 241 x 318 |
| 13½ | 10.0 x 13.0 | 254 x 330 |
| 14½ | 11.5 x 14.5 | 292 x 368 |
| 15 | 10.0 x 15.0 | 254 x 381 |
| 15½ | 12.0 x 15.5 | 305 x 394 |
See also:
UK postage rates for different envelope sizes
US postage rates for different envelope sizes