Convert pixels to inches, centimeters, and millimeters with any PPI value.
96 PPI (Screen) — The standard for web design and on-screen viewing. Most desktop monitors render at 96 PPI. Use this when designing websites, emails, or digital content.
150 PPI (Draft Print) — Acceptable for large prints viewed from a distance, such as posters, banners, or signage. Not ideal for close-up reading.
300 PPI (Print Quality) — The gold standard for professional printing. Magazines, books, brochures, and business cards all require 300 PPI for crisp text and sharp images.
192+ PPI (Retina/HiDPI) — High-density displays like MacBooks, iPads, and modern smartphones. Web designers often create 2x assets (192 PPI equivalent) for Retina screens.
| Pixels | @ 72 PPI | @ 96 PPI | @ 150 PPI | @ 300 PPI |
|---|---|---|---|---|
| 72 | 1.000" | 0.750" | 0.480" | 0.240" |
| 150 | 2.083" | 1.563" | 1.000" | 0.500" |
| 300 | 4.167" | 3.125" | 2.000" | 1.000" |
| 600 | 8.333" | 6.250" | 4.000" | 2.000" |
| 1080 | 15.000" | 11.250" | 7.200" | 3.600" |
| 1920 | 26.667" | 20.000" | 12.800" | 6.400" |
| 3840 | 53.333" | 40.000" | 25.600" | 12.800" |
| PPI | Use Case | Notes |
|---|---|---|
| 72 | Classic Mac displays | Historical standard, rarely used today |
| 96 | Web / screen design | Standard for Windows and most web browsers |
| 150 | Draft printing | Acceptable for large prints, posters, banners |
| 300 | Professional printing | Industry standard for books, magazines, brochures |
| 192–264 | Retina / HiDPI | MacBook, iPad, high-end laptops |
| 300–500 | Smartphones | iPhone (460 PPI), Galaxy (416 PPI) |
The number of pixels in an inch depends on the PPI (Pixels Per Inch). At 96 PPI (standard screen), 1 inch = 96 pixels. At 300 PPI (print quality), 1 inch = 300 pixels. The formula is: pixels = inches x PPI.
For web/screen design: 96 PPI (standard). For high-quality printing: 300 PPI. For draft printing: 150 PPI. For Retina displays: 192 PPI or higher. For mobile apps: 326-458 PPI depending on device.
Formula: cm = (pixels / PPI) x 2.54. Example: 300 pixels at 96 PPI = (300 / 96) x 2.54 = 7.94 cm. This converter shows cm alongside inches automatically.
300 PPI (often called DPI) is the standard for high-quality printing. Magazines, books, and professional prints all use 300 PPI. For large prints viewed from a distance (posters, banners), 150 PPI is acceptable.
PPI (Pixels Per Inch) refers to digital screens, while DPI (Dots Per Inch) refers to printed output. They're related but not identical. A 300 DPI printer might need a 300 PPI image for best quality. In practice, many people use the terms interchangeably.
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