How Many Pixels Is 28×40 at 300 DPI?
28×40 inches at 300 DPI is 8400×12000 pixels. That is a 7:10 ratio — here is the exact file to export and what to check before you sell it.
Updated
- 28×40 inches at 300 DPI is 8400×12000 pixels. That is a 7:10 ratio — here is the exact file to export and what to check before you sell it.
- 8400 × 12000 pixels. Multiply each dimension in inches by 300.
- 7:10. Any print that reduces to 7:10 will crop from the same file without redrawing it.
- Yes — 8400×12000 is exactly 300 DPI at 28×40 inches, which is the standard for print. Below about 200 DPI (5600×8000) softness starts to show.
28×40 inches at 300 DPI is 8400×12000 pixels. The arithmetic is inches × DPI, so 28 × 300 = 8400 and 40 × 300 = 12000.
| Resolution | Pixel dimensions | Good for |
|---|---|---|
| 300 DPI | 8400 × 12000 px | Print. The standard buyers expect. |
| 200 DPI | 5600 × 8000 px | Acceptable at arm's length; visibly softer up close. |
| 150 DPI | 4200 × 6000 px | Too low for a print you are charging for. |
| 72 DPI | 2016 × 2880 px | Screen only. Never sell this as a printable. |
The ratio matters more than the size
28×40 is a 7:10 ratio. Every other print size that reduces to 7:10 can be cut from the same master file without redrawing anything — which is why sellers who work in ratios list far more sizes for the same effort than sellers who work in inches.
Before you list it
- Export at 8400×12000 px and confirm the file actually reports 300 DPI, not 72.
- Check the true pixel dimensions rather than trusting the DPI field — software often lies about it.
- If your source image is smaller than 8400×12000, upscaling will show. Rebuild or offer a smaller size.
Ratio-Pack Generator
Turn one image into every print ratio buyers ask for — 300 DPI, cropped in your browser. Free, instant, nothing uploads.
Quick answers.
How many pixels is 28×40 at 300 DPI?
8400 × 12000 pixels. Multiply each dimension in inches by 300.
What aspect ratio is 28×40?
7:10. Any print that reduces to 7:10 will crop from the same file without redrawing it.
Is 8400×12000 enough for a 28×40 print?
Yes — 8400×12000 is exactly 300 DPI at 28×40 inches, which is the standard for print. Below about 200 DPI (5600×8000) softness starts to show.