Envelope No. 9 in pixels
1163 × 2663 px
at 300 DPI, the print standard · Envelope No. 9 is 98.425 × 225.425 mm · 3.1 megapixels
Envelope No. 9 size in pixels has no single answer, because a pixel is a length only once a resolution decides how many fit in an inch. The Envelope No. 9 pixel size is 1163 × 2663 px at the 300 DPI print standard and 279 × 639 px at the 72 DPI screen convention — every resolution in between is in the table below.
Envelope No. 9 at every resolution
A sheet of paper has no pixel size of its own. It has a physical size — 98.425 × 225.425 mm, or 3.88 × 8.88 inches — and a pixel count only appears once you choose how many pixels go in each inch.
| Resolution | Pixels | Megapixels | Uncompressed 24-bit | Use |
|---|---|---|---|---|
| 72 DPI | 279 × 639 | 0.2 MP | 0.5 MB | Screen only — visibly soft in print |
| 96 DPI | 372 × 852 | 0.3 MP | 0.9 MB | Screen only — visibly soft in print |
| 150 DPI | 581 × 1331 | 0.8 MP | 2.2 MB | Drafts, internal documents, large-format viewed from a distance |
| 200 DPI | 775 × 1775 | 1.4 MP | 3.9 MB | Acceptable for office printing |
| 300 DPI | 1163 × 2663 | 3.1 MP | 8.9 MB | The commercial print standard |
| 400 DPI | 1550 × 3550 | 5.5 MP | 16 MB | Fine detail and small type |
| 600 DPI | 2325 × 5325 | 12.4 MP | 35 MB | Line art, technical drawings, archival scanning |
| 1200 DPI | 4650 × 10650 | 49.5 MP | 142 MB | Archival and reproduction work |
What the file size means for Envelope No. 9
At 300 DPI an uncompressed Envelope No. 9 is 8.9 MB, and at 600 DPI it is 35 MB — four times as much, because doubling the resolution doubles both dimensions. That squaring is the reason large formats become unwieldy so quickly: the same 300 DPI that produces a manageable file at small sizes produces 8.9 MB here.
If a file is going to a printer, ask what they want before choosing. 300 DPI is the safe default and 150 is often enough for anything read from more than arm's length.
Setting up the canvas
Width: 1163 px
Height: 2663 px
Resolution: 300 pixels/inch
Colour: CMYK for print, RGB for screen
Bleed: 3 mm on every edge → 1233 × 2733 pxThe bleed figure is the one people forget: artwork that runs to the edge must extend 3 mm past it on all four sides, so the working canvas is larger than the finished sheet.
Frequently asked questions
What is Envelope No. 9 in pixels?
There is no single answer — it depends on the resolution. At the print standard of 300 DPI, Envelope No. 9 is 1163 × 2663 pixels. On screen at 72 DPI it is only 279 × 639.
What resolution should an Envelope No. 9 document be?
300 DPI for anything going to a commercial printer, which makes the canvas 1163 × 2663 pixels. 150 DPI (581 × 1331) is acceptable for a draft or an internal document. Large formats read from a distance can go lower — a poster viewed from two metres looks sharp at 150 DPI, and dropping to it here saves 6.6 MB of file.
How big is an Envelope No. 9 file at 300 DPI?
About 8.9 MB uncompressed at 24-bit colour — 1163 × 2663 × 3 bytes. Compression brings that down a great deal for flat artwork and very little for a photograph, which is why a print-ready Envelope No. 9 PDF is usually tens of megabytes.
How many megapixels is Envelope No. 9 at 300 DPI?
3.1 megapixels. For comparison, Envelope No. 9 at 600 DPI is 12.4 MP — quadruple, because doubling the resolution doubles both dimensions.
Other sizes in pixels
- A0 in pixels — 9933 × 14043
- A1 in pixels — 7016 × 9933
- A2 in pixels — 4961 × 7016
- A3 in pixels — 3508 × 4961
- A4 in pixels — 2480 × 3508
- A5 in pixels — 1748 × 2480
- A6 in pixels — 1240 × 1748
- A7 in pixels — 874 × 1240
- A8 in pixels — 614 × 874
- A9 in pixels — 437 × 614
- A10 in pixels — 307 × 437
- B0 in pixels — 11811 × 16701
- B1 in pixels — 8350 × 11811
- B2 in pixels — 5906 × 8350
- B3 in pixels — 4169 × 5906
- B4 in pixels — 2953 × 4169
- B5 in pixels — 2079 × 2953
- B6 in pixels — 1476 × 2079
- B7 in pixels — 1039 × 1476
- B8 in pixels — 732 × 1039
- C4 in pixels — 2705 × 3827
- C5 in pixels — 1913 × 2705
- C6 in pixels — 1346 × 1913
- DL in pixels — 1299 × 2598
Envelope No. 9 in millimetres, inches and points · All paper sizes · Screen resolutions