# Pixel Density Calculator — Pixels per Inch PPI Calculator > Calculates display pixel density (PPI/DPI) using screen dimensions and pixel counts. (iPhone/iPad app by Heng Jia Liang.) - Source: https://appshunter.io/ios/app/pixel-density-calculator/id6444243922 (this page in markdown: same URL + `.md`) - Developer: [Heng Jia Liang](https://appshunter.io/developer/1532000635) - Category: Utilities, Reference - Price: $2.99 - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 13 · 3 MB - Languages: American English - Released: 2022-11-07 - Data updated: 2026-09-09 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/pixel-density-calculator/id6444243922/reviews.md ## What is Pixel Density Calculator? Pixel Density Calculator are used for calculating pixels per inch (PPI) or dots per inch (DPI) of any display based on its dimensions and the pixel count. PPI is a measure of pixel density or resolution of a monitors, smartphones, tablets, smart watches, computer screen, notebooks, television screen or other display device. Pixels per inch indicates how many pixels are in a 1 inch line on a display. Also calculated are screen size, screen width, screen height, aspect ratio and total number of megapixels. Calculation including shape preview. The formula to calculate PPI from diagonal: PPI = √(w² + h²)/d where: d – Diagonal screen size in inches. w – Number of pixels along the horizontal line. h – Number of pixels along the vertical line. Calculate the number of pixels that fit on the diagonal: d = √(w² + h²) where: w - Number of pixels along the horizontal line. h - Number of pixels along the vertical line. Then, calculate the PPI as the ratio between the number of pixels along the diagonal and the diagonal screen size: PPI = d/di where di is the diagonal screen size in inches. Pixels per Inch Quality value 120 PPI - Low 120-160 PPI - Medium 160-213 PPI - Medium High 213-240 PPI - High 240-320 PPI - eXtra High 320-480 PPI - eXtra x2 High 480-640 PPI - eXtra x3 High What is pixel density: Pixels per inch (PPI) are a measurement of the pixel density (resolution) of devices in various contexts: typically computer LCD or OLED displays, image scanners, and digital camera image sensors. The PPI of a computer display is related to the size of the display in inches and the total number of pixels in the horizontal and vertical directions. The PPI and DPI definitions are essentially equivalent. Dots per inch, or DPI, is comparable to pixels per inch. Thanks for your support and do visit nitrio.com for more apps for your iOS devices. ## Key features - Calculate Pixels Per Inch (PPI) - Calculate Dots Per Inch (DPI) - Determine screen size - Calculate aspect ratio - Megapixel count calculation - Shape preview ## Frequently asked questions about Pixel Density Calculator ### What is Pixel Density Calculator? Pixel Density Calculator is a utility app used for calculating the pixels per inch (PPI) or dots per inch (DPI) of any display based on its dimensions and pixel count. It helps users understand the resolution of monitors, smartphones, and other screen devices. ### How does Pixel Density Calculator work? The app uses formulas to calculate PPI based on the diagonal screen size in inches and the number of pixels along the horizontal and vertical lines. It can also calculate the diagonal screen size from pixel dimensions. ### What information can I get from Pixel Density Calculator? Besides PPI and DPI, the app calculates screen size, screen width, screen height, aspect ratio, and the total number of megapixels for a given display. It also provides a shape preview. ### What is the price of Pixel Density Calculator? Pixel Density Calculator is available for a one-time purchase of $2.99. There are no subscription fees or in-app purchases required. ### What devices is Pixel Density Calculator compatible with? Pixel Density Calculator is designed for iOS devices, including iPhone, iPad, and iPod. It requires iOS 4+ and is optimized for various screen sizes. ### How often is Pixel Density Calculator updated? The app was last updated on December 30, 2025, with version 1.1. While specific update frequency isn't detailed, this indicates ongoing support and potential improvements. ### What is the age rating for Pixel Density Calculator? Pixel Density Calculator has an age rating of 4+. This means it is suitable for users of all ages, with no content restrictions. ### Does Pixel Density Calculator have ads? No, Pixel Density Calculator does not contain advertisements. It is a paid application that offers an ad-free experience for its users. ## Version history (last 2 releases) ### 1.1 — 2025-12-30 - Updated for the newest devices. - Minor bugs fixed. ### 1.0 — 2022-11-07 No release notes. ## Apps similar to Pixel Density Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Artisans 3D SoundKit](https://appshunter.io/ios/app/artisans-3d-soundkit/id6747320895) | — | Free | Utilities | | [Perspective Pixels](https://appshunter.io/ios/app/perspective-pixels/id6748315710) | 5.0 (1) | Free | Utilities | | [4K MAESTRO Total Control](https://appshunter.io/ios/app/4k-maestro-total-control/id1534677667) | — | Free | Utilities | | [Megapixel Calculator](https://appshunter.io/ios/app/megapixel-calculator/id1452649309) | 5.0 (2) | Free | Utilities | | [FFH4X Pro](https://appshunter.io/ios/app/ffh4x-pro/id6738394188) | 2.8 (11) | $8.99 | Utilities | | [Unit Converter: Univerter](https://appshunter.io/ios/app/unit-converter-univerter/id6738687525) | — | Free | Utilities | ## More apps by Heng Jia Liang - [Time Lapse Plus](https://appshunter.io/ios/app/time-lapse-plus/id806506963) - [Stop Motion Plus](https://appshunter.io/ios/app/stop-motion-plus/id815531972) - [Bubble Photo Paint](https://appshunter.io/ios/app/bubble-photo-paint/id921345975) - [Photo Art Painter](https://appshunter.io/ios/app/photo-art-painter/id1037774115) - [Batch Image Resize](https://appshunter.io/ios/app/batch-image-resize/id1117282560) - [Dash Cam Plus](https://appshunter.io/ios/app/dash-cam-plus/id1130785852) All apps by Heng Jia Liang: https://appshunter.io/developer/1532000635 ## Related topics [pixel density calculator](https://appshunter.io/ios/topics/pixel-density-calculator) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*