Convert px to inches, cm, and mm instantly. Enter your pixel count and DPI to get exact physical print dimensions.
Use this table to quickly look up how many pixels correspond to common measurements at standard DPI settings.
| DPI | 1 inch = | 10 cm = | Use case |
|---|---|---|---|
| 72 | 72 px | 283 px | Screen / web display |
| 96 | 96 px | 378 px | Windows screen default |
| 150 | 150 px | 591 px | Draft / proof print |
| 300 | 300 px | 1181 px | Standard print quality |
| 600 | 600 px | 2362 px | High quality / fine art |
Pixels are abstract units of digital information — they have no inherent physical size. The actual size of an image in print or on screen depends entirely on the pixel density of the output device, measured in dots per inch (DPI) or pixels per inch (PPI).
A 1000×1000 pixel image does not have a fixed physical size. At 100 DPI it prints at 10×10 inches. At 300 DPI it prints at 3.33×3.33 inches. At 72 DPI (web) it appears at 13.9×13.9 inches on screen. This is why understanding DPI is critical for print design and photography.
Computer screens typically operate at 72–96 PPI (older monitors) or 144–220 PPI (Retina/high-DPI displays). Print quality requires 150–600 DPI. An image that looks sharp on screen may print blurry if the pixel count is too low for the desired print size.
For a 4×6 inch print at 300 DPI you need 1200×1800 pixels. For an 8×10 inch print at 300 DPI you need 2400×3000 pixels. An A4 sheet (8.27×11.69 inches) at 300 DPI requires 2481×3507 pixels — roughly 8.7 megapixels. Planning your pixel count before resizing avoids quality loss from upscaling.
Points are a typographic measurement unit where 1 point = 1/72 inch. At 72 DPI, 1 pixel equals exactly 1 point. Font sizes in CSS and design software are specified in points. This matters when preparing print-ready documents where text must appear at a specific physical size.
In 2026, the most common mistake is mixing CSS px with a screen’s physical pixels. Website specs, browser dev tools, and most design systems use CSS pixels, while phones and laptops often render at 2x, 2.5x, or 3x device pixel ratio. So a 300 px-wide web element is not automatically 300 hardware pixels wide. Before converting pixels to inches, check whether your source is CSS px or actual image/display pixels, then include the device’s PPI and scaling. Otherwise your printed-size or on-screen size estimate can be way off.