Envelope Size Guide
Choosing the right envelope size is essential for ensuring your mailings look professional and arrive intact. Our Envelope Size Guide helps you find the perfect fit for every need—from standard #10 envelopes for business correspondence to large booklet and catalog styles for brochures, magazines, or promotional materials. Whether you’re mailing invitations, invoices, or marketing pieces, this guide provides dimensions, common uses, and compatible insert sizes to make your selection easy. With the right envelope, your message makes a great impression before it’s even opened.
|
Commercials |
| Envelope # | Dimensions (inches) | Max. Enclosure Size (inches) | Dimensions (Millimeters) | Max. Enclosure Size (Millimeters) |
| #5 | 3-1/8 x 5-1/2 | 2-7/8 x 5-1/4 | 79 x 140 | 73 x 133 |
| #6-1/4 | 3-1/2 x 6 | 3-1/4 x 5-3/4 | 89 x 146 | 83 x 146 |
| #6-3/4 | 3-5/8 x 6-1/2 | 3-3/8 x 6-1/4 | 92 x 165 | 86 x158 |
| #7 | 3-3/4 x 6-3/4 | 3-1/2 x 6-1/2 | 95 x 171 | 89 x 165 |
| #7-1/2 | 3-15/16 x 7-1/2 | 3-11/16 x 7-1/4 | 100 x 191 | 94 x 184 |
| #8-5/8 | 3-5/8 x 8-5/8 | 3-3/8 x 8-3/8 | 92 x 219 | 86 x 213 |
| #9 | 3-7/8 x 8-7/8 | 3-5/8 x 8-5/8 | 98 x 225 | 92 x 219 |
| #10 | 4-1/8 x 9-1/2 | 3-7/8 x 9-1/4 | 105 x 241 | 98 x 241 |
| #11 | 4-1/2 x 10-3/8 | 4-1/4 x 10-1/8 | 114 x 264 | 108 x 257 |
| #12 | 4-3/4 x 11 | 4-1/2 x 10-3/4 | 121 x 279 | 114 x 273 |
| #14 | 5 x 11-1/2 | 4-3/4 x 11-1/4 | 127 x 292 | 121 x 286 |
(Note: These are only standard sizes, to view all of our available sizes and styles, you can Browse our Products.)
|
Catalogs |
| Dimensions (inches) | Max. Enclosure Size (inches) | Dimensions (Millimeters) | Max. Enclosure Size (Millimeters) |
| 6 x 9 | 5-3/4 x 8-3/4 | 152 x 229 | 146 x 222 |
| 6 x 9-1/2 | 5-3/4 x 9-1/4 | 152 x 241 | 146 x 235 |
| 6-1/2 x 9-1/2 | 6-1/4 x 9-1/4 | 165 x 241 | 158 x 235 |
| 7-1/2 x 10-1/2 | 7-1/4 x 10-1/4 | 191 x 267 | 184 x 260 |
| 9 x 12 | 8-3/4 x 11-3/4 | 229 x 305 | 222 x 298 |
| 9-1/2 x 12-1/2 | 9-1/4 x 12-1/4 | 241 x 318 | 235 x 311 |
| 10 x 13 | 9-3/4 x 12-3/4 | 254 x 330 | 248 x 324 |
| 10 x 15 | 9-3/4 x 14-3/4 | 254 x 381 | 248 x 375 |
| 12 x 15-1/2 | 11-3/4 x 15-1/4 | 305 x 394 | 298 x 387 |
|
Booklets |
| Dimensions (inches) | Max. Enclosure Size (inches) | Dimensions (Millimeters) | Max. Enclosure Size (Millimeters) |
| 6 x 9 | 5-3/4 x 8-3/4 | 152 x 229 | 146 x 222 |
| 6 x 9-1/2 | 5-3/4 x 9-1/4 | 152 x 241 | 146 x 235 |
| 6-1/2 x 9-1/2 | 6-1/4 x 9-1/4 | 165 x 241 | 159 x 235 |
| 7-1/2 x 10-1/2 | 7-1/4 x 10-1/4 | 191 x 254 | 184 x 245 |
| 9 x 12 | 8-3/4 x 11-3/4 | 229 x 309 | 222 x 279 |
| 10 x 13 | 9-3/4 x 12-3/4 | 254 x 330 | 229 x 305 |
| 10 x 15 | 9-3/4 x 14-3/4 | 254 x 381 | 229 x 356 |
|
Announcements |
| Envelope # | Dimensions (inches) | Max. Enclosure Size (inches) | Dimensions (Millimeters) | Max. Enclosure Size (Millimeters) |
| A-2 | 4-3/8 x 5-3/4 | 4-1/8 x 5-1/2 | 111 x 146 | 105 x 140 |
| A-6 | 4-3/4 x 6-1/2 | 4-1/2 x 6-1/4 | 114 x 165 | 114 x 159 |
| A-7 | 5-1/4 x 7-1/4 | 5 x 7 | 133 x 184 | 127 x 180 |
| A-8 | 5-1/2 x 8-1/8 | 5-1/4 x 7-7/8 | 140 x 206 | 133 x 200 |
| A-9 | 5-3/4 x 8-3/4 | 5-1/2 x 8-1/2 | 146 x 222 | 140 x 216 |
| A-10 | 6 x 9-1/2 | 5-3/4 x 9-1/4 | 152 x 241 | 146 x 235 |
|
Coins |
| Envelope # | Dimensions (inches) | Dimensions (Millimeters) |
| 00 | 1-11/16 x 2-3/4 | 43 x 70 |
| 1A | 2-1/4 x 3-1/2 | 57 x 89 |
| 2AA | 2-1/2 x 3-1/2 | 63 x 89 |
| 3B | 2-1/2 x 4-1/4 | 63 x 108 |
| 4-1/4D | 3 x 4-7/8 | 76 x 124 |
| 5E | 2-7/8 x 5-1/4 | 73 x 133 |
| 5-1/2F | 3-1/8 x 5-1/2 | 79 x 140 |
| 6G | 3-3/8 x 6 | 85 x 152 |
| 7H | 3-1/2 x 6-1/2 | 89 x 165 |
|
Collections |
| Envelope # | Dimensions (inches) | Max. Enclosure Size (inches) | Dimensions (Millimeters) | Max. Enclosure Size (Millimeters) |
| #6-1/4 | 3-1/2 x 6-1/4 | 3-1/4 x 6 | 89 x 159 | 83 x 152 |
| #6-3/4 | 3-5/8 x 6-1/2 | 3-3/8 x 6-1/4 | 92 x 165 | 86 x 159 |
| #9 | 3-7/8 x 8-7/8 | 3-5/8 x 8-5/8 | 98 x 225 | 92 x 219 |