Screen PPI
108.79
Resolution Planning
DPI / PPI Calculator
Compute pixel density for screens and effective print DPI for graphics, photo exports, and physical artwork workflows.
By ArtistTool TeamLast updated June 2026
DPI / PPI Calculator
Calculate screen PPI from pixel resolution and diagonal size, and estimate print DPI from intended print dimensions.
Print DPI (X)
256.00
Print DPI (Y)
240.00
Average Print DPI
248.00
DPI for Print vs Web
Use around 72 to 96 PPI for web graphics and 300 DPI for high-quality print. Large posters can often print well at 150 to 240 DPI because they are viewed from farther away.
How to use DPI / PPI Calculator
For print: enter your image's pixel width and height plus the target physical print size (in inches). The calculator divides pixels by inches to give you DPI. If the result is 300 or above, your file meets the standard high-quality print threshold. Below 150 DPI usually means visible softness at close viewing distance.
For screens: enter your display's pixel resolution and its diagonal measurement in inches. The calculator uses the Pythagorean theorem to find the pixel diagonal, then divides by the physical diagonal to give PPI. Above 200 PPI is generally considered retina-class; below 100 PPI shows individual pixels at normal reading distance.
DPI and PPI are often used interchangeably in everyday language, but they measure different things — DPI describes ink dot density in physical printing, while PPI describes pixel density on a screen. This calculator handles both calculations separately so you can use the right one for your actual output medium.
Typical PPI / DPI Ranges
| Use Case | Typical Range |
|---|---|
| Mobile (retina) | 300-500 |
| Laptop | 110-220 |
| Desktop monitor | 90-180 |
| High-quality print | 300 |
| Large poster print | 150-240 |
Print vs Web Density Chart
| Target | Typical Density | Why it works |
|---|---|---|
| Web graphics | 72-96 PPI | Optimized for screen display and smaller file size. |
| Standard print | 300 DPI | Best for magazines, art prints, and close viewing. |
| Large-format poster | 150-240 DPI | Acceptable when viewing distance is greater. |
Worked examples
Example 1: PPI of a 27-inch 2560×1440 monitor
- Screen resolution: 2560 × 1440 pixels
- Screen diagonal: 27 inches
- Pixel diagonal (Pythagorean theorem): √(2560² + 1440²) = √(6,553,600 + 2,073,600) = √8,627,200 ≈ 2937 px
- PPI = 2937 ÷ 27 ≈ 109 PPI
Result: A 27-inch 2560×1440 display has approximately 109 PPI
Example 2: Effective print DPI for an 8×10 print from a 2400×3000 px file
- Image pixel dimensions: 2400 × 3000 pixels
- Print size: 8 × 10 inches
- DPI (width): 2400 ÷ 8 = 300 DPI
- DPI (height): 3000 ÷ 10 = 300 DPI
Result: 2400×3000 px at 8×10 inches = 300 DPI — ideal for high-quality print
Example 3: Checking if a 1500×2000 px file works for a 5×7 print
- Image pixel dimensions: 1500 × 2000 pixels
- Print size: 5 × 7 inches
- DPI (width): 1500 ÷ 5 = 300 DPI
- DPI (height): 2000 ÷ 7 ≈ 286 DPI
Result: Effective DPI ≈ 286–300 — acceptable for most print labs
Understanding DPI vs PPI
PPI and DPI are related but used in different contexts. PPI describes pixel density on displays, while DPI usually refers to print output density. Understanding the difference is critical before buying screens, exporting artwork, or sending files to print. This calculator supports both workflows: screen checks and print checks. If you know resolution and diagonal size, you can estimate perceived sharpness on a monitor or device. If you know final print dimensions, you can estimate whether an image has enough detail for clean output.
FAQ: DPI & PPI for Artists
What is a good DPI for printing?
The standard is 300 DPI for high-quality prints that will be viewed up close. For large posters or wall art viewed from distance, 150-240 DPI is often acceptable. Lower DPI (72-96) is fine for web-only images.
How do I find my monitor's PPI?
You can calculate it using this tool by entering your monitor's resolution (horizontal and vertical pixels) and diagonal screen size (typically 24", 27", etc.). Use your monitor's spec sheet or measure the diagonal with a ruler to get accurate results.
Why does 300 DPI matter for print?
At 300 DPI, individual pixels become invisible to the human eye, creating smooth gradients and sharp details. Below 150 DPI, prints may appear pixelated or blurry. Going above 300 DPI adds file size without visible quality gains.
What if my image doesn't have enough DPI?
If your image is too low-DPI for your intended print size, you have options: reduce print size, use lower-quality print settings (for large posters), or upscale the image using AI tools (though quality depends on the original).
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