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 formula to convert pixels to inches is: Inches = Pixels ÷ PPI. For example, 300 pixels at 96 PPI = 300 ÷ 96 = 3.125 inches. For print design at 300 DPI, 300 pixels = 1 inch exactly.
To convert pixels to centimeters: cm = (Pixels ÷ PPI) × 2.54. This is essential for print designers who need precise physical dimensions from digital assets.
| Context | PPI / DPI | 1 Inch = |
|---|---|---|
| Screen (standard) | 96 PPI | 96 px |
| Retina Display | 192 PPI | 192 px |
| Print (draft) | 150 DPI | 150 px |
| Print (high quality) | 300 DPI | 300 px |
| Smartphone | 300–500 PPI | 300–500 px |
Inches = Pixels ÷ PPI
300px ÷ 96 = 3.125"
cm = (Pixels ÷ PPI) × 2.54
300px ÷ 96 × 2.54 = 7.94 cm
Pixels = Inches × PPI
3" × 300 = 900 px
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.
At 300 DPI (dots per inch), one inch equals exactly 300 pixels. This is the standard resolution for high-quality print. For example, a 4×6 inch photo at 300 DPI would be 1200×1800 pixels.
Use 300 DPI for high-quality prints (photos, brochures, business cards). 150 DPI is acceptable for large prints viewed from a distance (posters, banners). 72-96 DPI is for screen/web only.
Use the formula: cm = (Pixels ÷ PPI) × 2.54. For example, 300 pixels at 96 PPI = (300 ÷ 96) × 2.54 = 7.94 cm. For print at 300 DPI: 300 ÷ 300 × 2.54 = 2.54 cm exactly.
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