How Big Will Your Image Print at a Given DPI?
Calculate the print dimensions of your image at any DPI, or find how many pixels you need for a given print size and resolution.
Pixels → Print Size
Print Size → Pixels Needed
Standard Print Sizes - Pixels Required at 300 DPI
| Print Size | Pixels at 300 DPI | Megapixels | Camera Required |
|---|---|---|---|
| 4×6 inches | 1200 × 1800 px | 2.2 MP | Any modern camera |
| 5×7 inches | 1500 × 2100 px | 3.2 MP | Any modern camera |
| 8×10 inches | 2400 × 3000 px | 7.2 MP | 7+ MP camera |
| 11×14 inches | 3300 × 4200 px | 13.9 MP | 14+ MP camera |
| 16×20 inches | 4800 × 6000 px | 28.8 MP | 24+ MP camera |
| A4 (8.3×11.7 inches) | 2480 × 3508 px | 8.7 MP | 9+ MP camera |
| A3 (11.7×16.5 inches) | 3508 × 4961 px | 17.4 MP | 18+ MP camera |
DPI Explained
DPI (Dots Per Inch) describes the density of printed dots in a given area. Higher DPI means more detail per inch of print. For digital screens, PPI (Pixels Per Inch) is used instead.
- 72–96 DPI - Screen resolution. Not suitable for print.
- 150 DPI - Minimum for acceptable print quality. Suitable for large banners viewed from a distance.
- 300 DPI - Standard for professional photo and document printing.
- 600 DPI - High-quality print for sharp text and fine detail.
Setting DPI in GIMP
In GIMP, go to Image → Print Size to view and set the print resolution of your image. Changing DPI here does not change the pixel count - It only affects how the image appears when printed or exported to PDF. To actually change the pixel count, use Image → Scale Image.
Print Planning Examples
| Project | Recommended DPI | Why |
|---|---|---|
| Photo print held in hand | 300 DPI | Sharp enough for close viewing without oversized files. |
| Poster viewed on a wall | 150 to 240 DPI | Large prints are viewed farther away, so lower DPI can still look clean. |
| Line art or text-heavy artwork | 300 to 600 DPI | Edges and small type need more pixel density. |
| Web image | DPI does not matter | Browsers use pixel dimensions, not print metadata. |
If a print shop asks for 300 DPI, they usually mean the image must have enough pixels for the requested physical size. A 1200 × 1800 pixel photo can make a clean 4 × 6 inch print at 300 DPI, but it cannot make a sharp 16 × 24 inch poster without upscaling.
Related Tutorial
Set DPI, choose the right export format, and understand resolution for print vs screen output.
Related Tools
Convert pixel dimensions to print size at any DPI.
Find the right ratio for any width and height.
Estimate PNG, JPG, WebP, TIFF file sizes before saving.