Plan a multi-monitor setup by calculating PPI and screen dimensions, previewing wallpapers, and rearranging displays.
Display Calc
Calculate display distance, screen dimensions, aspect ratio, and PPI with this display calculator.
About Display Calc
Display Calc is a web and iOS calculator for display measurements. It calculates PPI/DPI, aspect ratio, screen dimensions, Retina status, and Retina viewing distance. Users can choose aspect ratio presets such as NTSC 4:3, NTSC 16:9, PC 16:10, VistaVision 1.85:1, Cinemascope 2.35:1, or Panavision 2.40:1, or enter a custom width-to-height ratio. It can also derive aspect ratio from a screen resolution. For physical dimensions, entering any one value—width, height, or diagonal—updates the others automatically. A reference table lists notable devices with resolution, diagonal size, PPI, and Retina distance. Pricing information is not provided.
Key features
- Calculate PPI/DPI from screen resolution and physical dimensions.
- Determine Retina status and the distance at which a display becomes Retina.
- Use aspect ratio presets or enter a custom width-to-height ratio.
- Derive aspect ratio from a screen resolution input.
- Enter one physical dimension to auto-update width, height, or diagonal.
- Reference table of notable devices with resolution, diagonal, PPI, and Retina distance.
Best for: People who need to check display sharpness, Retina distance, aspect ratio, screen dimensions, or PPI for monitor, device, or print sizing decisions.
Good for
- Supports preset and custom aspect ratios.
- Updates physical screen dimensions automatically from one input value.
- Includes a reference table of notable devices with display measurements.
Watch out for
- Pricing details are not provided.
Display Calc at a glance
- Category
- Software & Utilities › Hardware & Diagnostics
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- iOS, Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Display Calc FAQ
What can I enter to calculate physical screen dimensions?
Enter any one value—width, height, or diagonal—and the others update automatically.
Can I use a custom aspect ratio?
Yes. Choose a preset or enter a custom ratio; old TVs use 4:3 and modern displays 16:9.
How is Retina distance shown?
The calculator shows Retina status at an 11-inch viewing distance and Retina distance in inches for perfect perception.
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