Photo 8×12 in pixels
2400 × 3600 px
at 300 DPI, the print standard · Photo 8×12 is 203.2 × 304.8 mm · 8.6 megapixels
Photo 8×12 at every resolution
A sheet of paper has no pixel size of its own. It has a physical size — 203.2 × 304.8 mm, or 8 × 12 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 | 576 × 864 | 0.5 MP | 1.4 MB | Screen only — visibly soft in print |
| 96 DPI | 768 × 1152 | 0.9 MP | 2.5 MB | Screen only — visibly soft in print |
| 150 DPI | 1200 × 1800 | 2.2 MP | 6.2 MB | Drafts, internal documents, large-format viewed from a distance |
| 200 DPI | 1600 × 2400 | 3.8 MP | 11 MB | Acceptable for office printing |
| 300 DPI | 2400 × 3600 | 8.6 MP | 25 MB | The commercial print standard |
| 400 DPI | 3200 × 4800 | 15.4 MP | 44 MB | Fine detail and small type |
| 600 DPI | 4800 × 7200 | 34.6 MP | 99 MB | Line art, technical drawings, archival scanning |
| 1200 DPI | 9600 × 14400 | 138.2 MP | 396 MB | Archival and reproduction work |
What the file size means for Photo 8×12
At 300 DPI an uncompressed Photo 8×12 is 25 MB, and at 600 DPI it is 99 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 25 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: 2400 px
Height: 3600 px
Resolution: 300 pixels/inch
Colour: CMYK for print, RGB for screen
Bleed: 3 mm on every edge → 2471 × 3671 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 Photo 8×12 in pixels?
There is no single answer — it depends on the resolution. At the print standard of 300 DPI, Photo 8×12 is 2400 × 3600 pixels. On screen at 72 DPI it is only 576 × 864.
What resolution should an Photo 8×12 document be?
300 DPI for anything going to a commercial printer, which makes the canvas 2400 × 3600 pixels. 150 DPI (1200 × 1800) 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 19 MB of file.
How big is an Photo 8×12 file at 300 DPI?
About 25 MB uncompressed at 24-bit colour — 2400 × 3600 × 3 bytes. Compression brings that down a great deal for flat artwork and very little for a photograph, which is why a print-ready Photo 8×12 PDF is usually tens of megabytes.
How many megapixels is Photo 8×12 at 300 DPI?
8.6 megapixels. For comparison, Photo 8×12 at 600 DPI is 34.6 MP — quadruple, because doubling the resolution doubles both dimensions.
Photo 8×12 in millimetres, inches and points · All paper sizes · Screen resolutions