DPI Calculator

Calculate DPI (dots per inch) for screens and images based on resolution and diagonal size.

Request Feature / Support

15,472+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

AI Web Tool Generator

Build Your Own Custom Web Calculator in Seconds

Type what tool or calculator you need below. Our AI will build it instantly for your site.

About This Tool

This DPI calculator helps you determine the dots per inch (DPI) or pixels per inch (PPI) of any screen, display, or image. Simply enter the width and height in pixels, along with the diagonal size in inches, and get instant DPI calculation. Useful for designers, photographers, and anyone working with digital displays to understand pixel density and image quality.

Save your calculation history with a free account

How to Use

Enter the width of your screen/image in pixels
Enter the height of your screen/image in pixels
Enter the diagonal size in inches
Click 'Calculate DPI' to see the result
View detailed calculation including pixel count and DPI value

Frequently Asked Questions

Find Quick Answers

What is DPI?

DPI stands for Dots Per Inch, which measures the pixel density of a screen or image. Higher DPI means sharper, more detailed display quality.

How is DPI calculated?

DPI is calculated using the formula: DPI = √(width² + height²) / diagonal size. This gives you the number of pixels per inch on the diagonal.

What's the difference between DPI and PPI?

DPI (Dots Per Inch) is traditionally used for printing, while PPI (Pixels Per Inch) is used for screens. In digital contexts, they're often used interchangeably to refer to pixel density.

What are typical DPI values?

Standard monitors: 72-96 DPI, Retina displays: 200-300 DPI, Smartphones: 300-500 DPI, High-end printers: 600-1200 DPI.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

Related Tools

Other useful calculators and utilities you might like

Road Distance Calculator

Calculate the driving distance and travel time between two addresses with our free online road dista...

Spotify to MP3 Converter

Convert Spotify tracks and playlists to MP3 format instantly with our free online converter.

Age Calculator

Calculate your exact age in years, months, and days from any birth date to any target date.

Uber Price Calculator

Estimate your Uber ride fare based on distance, duration, surge multiplier, base fare, and vehicle t...

Your Feedback Matters

Help Us to Improve