C7/C6 (International) Envelope Size Size
According to C7/C6 (International) Envelope Size format envelope size, the width of the envelope is 81mm(3.2 inches) and the height is 162mm(6.4 inches), as shown in the picture on the right.
| Format/name | C7/C6 (International) Envelope Size |
|---|---|
| Width(mm) | 81 mm |
| Width(in) | 3.2 inches |
| Height(mm) | 162 mm |
| Height(in) | 6.4 inches |
Taking our commonly used credit cards as a reference, the size of the credit card is 85.6 mm x 53.98 mm (3.4 in X 2.1 in). The photo size in C7/C6 (International) Envelope Size format is approximately 0.9 times the width of the credit card and approximately 3 times the height of the credit card.
81mm
162 mm
162 mm
North American Standard Envelope Sizes
| Format | Width × Height (mm) | Width × Height (cm) | Width × Height (in) |
|---|---|---|---|
| 6 1/4 (Commercial) | 152 × 89 mm | 15.2 × 8.9 cm | 6 × 3.5 in |
| 6 3/4(Commercial) | 165 × 92 mm | 16.5 × 9.2 cm | 6.5 × 3.6 in |
| 7 (Commercial) | 172 × 95 mm | 17.2 × 9.5 cm | 6.8 × 3.7 in |
| 7 3/4 Monarch (Commercial) | 191 × 98 mm | 19.1 × 9.8 cm | 7.5 × 3.9 in |
| 8 5/8(Commercial) | 219 × 92 mm | 21.9 × 9.2 cm | 8.6 × 3.6 in |
| 9(Commercial) | 225 × 98 mm | 22.5 × 9.8 cm | 8.9 × 3.9 in |
| 10(Commercial) | 241 × 104 mm | 24.1 × 10.4 cm | 9.5 × 4.1 in |
| 11(Commercial) | 264 × 114 mm | 26.4 × 11.4 cm | 10.4 × 4.5 in |
| 12(Commercial) | 279 × 121 mm | 27.9 × 12.1 cm | 11 × 4.8 in |
| 14(Commercial) | 292 × 127 mm | 29.2 × 12.7 cm | 11.5 × 5 in |
| 16(Commercial) | 305 × 152 mm | 30.5 × 15.2 cm | 12 × 6 in |
| A1 (Announcement) | 92 × 130 mm | 9.2 × 13 cm | 3.6 × 5.1 in |
| A2 Lady Grey (Announcement) | 146 × 111 mm | 14.6 × 11.1 cm | 5.7 × 4.4 in |
| A4 (Announcement) | 159 × 108 mm | 15.9 × 10.8 cm | 6.3 × 4.3 in |
| A6 Thompson's Standard (Announcement) |
165 × 121 mm | 16.5 × 12.1 cm | 6.5 × 4.8 in |
| A7 Besselheim (Announcement) |
184 × 133 mm | 18.4 × 13.3 cm | 7.2 × 5.2 in |
| A8 Carr's (Announcement) | 206 × 140 mm | 20.6 × 14 cm | 8.1 × 5.5 in |
| A9 Diplomat (Announcement) | 222 × 146 mm | 22.2 × 14.6 cm | 8.7 × 5.7 in |
| A10 Willow (Announcement) | 241 × 152 mm | 24.1 × 15.2 cm | 9.5 × 6 in |
| A Long (Announcement) | 225 × 98 mm | 22.5 × 9.8 cm | 8.9 × 3.9 in |
| 1 (Catalog) | 229 × 152 mm | 22.9 × 15.2 cm | 9 × 6 in |
| 1 3/4 (Catalog) | 241 × 152 mm | 24.1 × 15.2 cm | 9.5 × 6 in |
| 3 (Catalog) | 254 × 178 mm | 25.4 × 17.8 cm | 10 × 7 in |
| 6 (Catalog) | 267 × 191 mm | 26.7 × 19.1 cm | 10.5 × 7.5 in |
| 8 (Catalog) | 286 × 210 mm | 28.6 × 21 cm | 11.3 × 8.3 in |
| 9 3/4 (Catalog) | 286 × 222 mm | 28.6 × 22.2 cm | 11.3 × 8.7 in |
| 10 1/2 (Catalog) | 305 × 229 mm | 30.5 × 22.9 cm | 12 × 9 in |
| 12 1/2 (Catalog) | 318 × 241 mm | 31.8 × 24.1 cm | 12.5 × 9.5 in |
| 13 1/2 (Catalog) | 330 × 254 mm | 33 × 25.4 cm | 13 × 10 in |
| 14 1/2 (Catalog) | 368 × 292 mm | 36.8 × 29.2 cm | 14.5 × 11.5 in |
| 15 (Catalog) | 381 × 254 mm | 38.1 × 25.4 cm | 15 × 10 in |
| 15 1/2 (Catalog) | 394 × 305 mm | 39.4 × 30.5 cm | 15.5 × 12 in |
International Standard Envelope Sizes
| Format | Width × Height (mm) | Width × Height (cm) | Width × Height (in) | AR |
|---|---|---|---|---|
| DL | 110 × 220 | 11 × 22 | 4.3 x 8.7 | 2∶1 |
| C7 | 81 × 114 | 8.1 × 11.4 | 3.2 x 4.5 | √2∶1 |
| C7/C6 | 81 × 162 | 8.1 × 16.2 | 3.2 × 6.4 | 2∶1 |
| C6 | 114 × 162 | 11.4 × 16.2 | 4.5 × 6.4 | √2∶1 |
| C6/C5 | 114 × 229 | 11.4 × 22.9 | 4.5 × 9 | 2∶1 |
| C5 | 162 × 229 | 16.2 × 22.9 | 6.4 × 9 | √2∶1 |
| C4 | 229 × 324 | 22.9 × 32.4 | 9 × 12.8 | √2∶1 |
| C3 | 324 × 458 | 32.4 × 45.8 | 12.8 × 18 | √2∶1 |
| B6 | 125 × 176 | 12.5 × 17.6 | 4.9 × 6.9 | √2∶1 |
| B5 | 176 × 250 | 17.6 × 25 | 6.9 × 9.8 | √2∶1 |
| B4 | 250 × 353 | 25 × 35.3 | 9.8 × 13.9 | √2∶1 |
| E4 | 280 × 400 | 28 × 40 | 11 × 15.7 | 10∶7 |
