3 x 4 Inches to Pixels
3 × 4 inches is 900 × 1,200 pixels at 300 DPI, 450 × 600 pixels at 150 DPI and 288 × 384 pixels at the 96 PPI screen standard.
Edit any field to convert a different size at the same resolution.
3 × 4 inches in pixels at every common resolution
The pixel count changes with the resolution you are working to — these are the values you are most likely to need.
| Resolution | Width × height in pixels | Typical use |
|---|---|---|
| 72 DPI | 216 × 288 | Legacy web |
| 96 DPI | 288 × 384 | Screen and CSS |
| 150 DPI | 450 × 600 | Posters and drafts |
| 300 DPI | 900 × 1,200 | Photo and magazine print |
| 600 DPI | 1,800 × 2,400 | Fine art and line work |
How the conversion works
Pixels are found by multiplying the length in inches by the pixel density: pixels = inches × DPI. For 3 × 4 inches at 300 DPI that is 3 × 300 = 900 and 4 × 300 = 1,200.
At the 96 PPI CSS reference the same measurement is 288 × 384 pixels, which is where it would land in a stylesheet rather than on paper.
A print at this size is held or read close up, where 300 DPI is the density to work to, which puts it at 900 × 1,200 pixels at 300 DPI and 450 × 600 at 150.
That works out at 1.1 megapixels at 300 DPI, or 0.3 megapixels at 150 DPI. In metric the same size is 7.62 × 10.16 cm.
Frequently asked questions
How many pixels is 3 × 4 inches?
900 × 1,200 pixels at 300 DPI, 450 × 600 at 150 DPI and 288 × 384 at the 96 PPI screen standard. Multiply the inches by whichever density you are working to.
How many pixels is 3 × 4 inches at 300 DPI?
900 × 1,200 pixels. That is the standard density for photographic and magazine printing.
What is 3 × 4 inches in centimetres?
7.62 × 10.16 cm, because one inch is exactly 2.54 centimetres.
Is 300 DPI the right density for this size?
Yes. At this size the finished piece is held or read close up, which is exactly what the 300 DPI standard is for — 900 × 1,200 pixels. Dropping to 150 halves that to 450 × 600 and the softening is visible in the hand.
Why does the pixel count change with DPI?
A pixel has no fixed physical size. The DPI value says how many pixels fill one inch, so raising it raises the pixel count needed to cover the same physical space.