Monitor PPI Calculator
Calculate PPI to compare monitors properly: a 27″ 1440p and a 32″ 4K are not the same sharpness.
- Runs on your device
- No watermark
- Free, no signup needed
- Available offline
How to use it
- Enter your numbers.
- Results update instantly.
- Adjust any value to compare scenarios.
Questions
How is PPI calculated?
Find the diagonal resolution, √(width² + height²), and divide it by the screen size in inches. A 27-inch 2560 × 1440 monitor is about 109 PPI.
What is a good PPI for a monitor?
Around 100–110 PPI looks sharp at a normal desk distance without scaling. 140 PPI and above, such as a 27-inch 4K at about 163 PPI, looks crisper but usually needs Windows or macOS scaling.
Is a 27-inch 1440p or a 32-inch 4K monitor sharper?
The 32-inch 4K, at about 138 PPI against 109 PPI for the 27-inch 1440p.
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