A6 Envelope (US) paper size
120.65 × 165.1 mm
4.75 × 6.5 inches · 12.07 × 16.51 cm · aspect ratio 1:1.37
A6 Envelope (US) size is 120.65 × 165.1 mm. Those are the A6 Envelope (US) dimensions a printer works to; the same sheet in centimetres, inches, points and pixels is below.
What A6 Envelope (US) is for
A6 Envelope (US) is 4¾ × 6½ inches, or 120.65 × 165.1 mm. Holds a 4 by 6 inch card or photograph with room to spare, which makes it the usual envelope for save-the-dates and greeting cards. ISO A6 paper is 105 x 148 mm and is a different thing entirely.
A6 Envelope (US) dimensions in every unit
| Unit | Width | Height |
|---|---|---|
| Millimetres | 120.65 mm | 165.1 mm |
| Centimetres | 12.07 cm | 16.51 cm |
| Inches | 4.75 in | 6.5 in |
| Points (PostScript) | 342 pt | 468 pt |
A6 Envelope (US) in pixels
Pixel dimensions depend entirely on the resolution you are working at — there is no single "pixel size" for a sheet of paper. Every resolution, with file sizes and canvas setup →
| Resolution | Pixels | Use |
|---|---|---|
| 72 DPI | 342 × 468 | Screen preview only — far too coarse to print |
| 150 DPI | 713 × 975 | Draft printing, internal documents |
| 300 DPI | 1425 × 1950 | The standard for commercial print |
| 600 DPI | 2850 × 3900 | Fine detail, line art, archival scanning |
Setting up a print document? Use 300 DPI and add 3 mm of bleed on every edge unless your printer specifies otherwise.
How A6 Envelope (US) relates to the rest of the series
At 120.65 × 165.1 mm (4.75 × 6.5 inches) the aspect ratio is 1:1.368. US envelopes are not a halving series: each size is cut to hold a particular sheet or card, so the numbers step irregularly and nothing scales cleanly to anything else.
Of the standard sheets on this site, the largest that goes in flat is A6 at 105 × 148 mm, with a few millimetres to spare on each edge.
Folded, the largest standard sheet it takes is a Letter sheet folded in half and then in three.
About A6 Envelope (US)
4.75 × 6.5 inches. Takes a 4 by 6 inch card or photo. Unrelated to ISO A6.
Other US envelope sizes sizes
| Size | Millimetres | Inches |
|---|---|---|
| Envelope No. 10 | 104.775 × 241.3 mm | 4.13 × 9.5 in |
| A7 Envelope (US) | 133.35 × 184.15 mm | 5.25 × 7.25 in |
| A1 Envelope (US) | 92.075 × 130.175 mm | 3.63 × 5.13 in |
| A2 Envelope (US) | 111.125 × 146.05 mm | 4.38 × 5.75 in |
| A8 Envelope (US) | 139.7 × 206.375 mm | 5.5 × 8.13 in |
| A9 Envelope (US) | 146.05 × 222.25 mm | 5.75 × 8.75 in |
| A10 Envelope (US) | 152.4 × 241.3 mm | 6 × 9.5 in |
| Envelope No. 6 3/4 | 92.075 × 165.1 mm | 3.63 × 6.5 in |
| Envelope No. 9 | 98.425 × 225.425 mm | 3.88 × 8.88 in |
| Envelope No. 11 | 114.3 × 263.525 mm | 4.5 × 10.38 in |
| Envelope No. 12 | 120.65 × 279.4 mm | 4.75 × 11 in |
| Envelope No. 14 | 127 × 292.1 mm | 5 × 11.5 in |
Frequently asked questions
What size is A6 Envelope (US) in mm?
120.65 × 165.1 mm.
What size is A6 Envelope (US) in inches?
4.75 × 6.5 inches.
What size is A6 Envelope (US) in pixels?
There is no single answer — it depends on resolution. At the print standard of 300 DPI it is 1425 × 1950 pixels; at 72 DPI it is only 342 × 468.