Inches to pixels at the 300 dpi print standard — instant px size for any print dimension. px = in × 300.
| Input | Result |
|---|---|
| 4 in at 300 dpi | 1,200 px |
| 6 in at 300 dpi | 1,800 px |
| 8 in at 300 dpi | 2,400 px |
4 × 300 = 1,200 px. A standard 4 × 6 in photo print therefore needs a 1,200 × 1,800 px image for full 300 dpi quality.
For handheld prints, yes — the eye resolves ~300 ppi at reading distance. Large prints viewed from farther away can drop to 150 dpi without visible loss.
Divide the image's pixel width by the print width in inches. 2,400 px ÷ 8 in = 300 dpi — exactly print quality.