Inch to Pixel Converter

Convert inches to pixels with precision for web, print, and screen design

Popular Inch to Pixel Conversions

Below are common inch to pixel conversions at different resolutions. These values are essential for web designers, graphic artists, and anyone working with digital displays.

Inches 96 PPI (Web) 72 PPI (Screen) 300 PPI (Print)
0.5 in 48 px 36 px 150 px
1 in 96 px 72 px 300 px
2 in 192 px 144 px 600 px
3 in 288 px 216 px 900 px
4 in 384 px 288 px 1200 px
5 in 480 px 360 px 1500 px
6 in 576 px 432 px 1800 px
8 in 768 px 576 px 2400 px
10 in 960 px 720 px 3000 px
12 in 1152 px 864 px 3600 px

Common Screen Dimensions

Here are popular screen sizes converted from inches to pixels at various resolutions.

Screen Size Dimensions (inches) At 96 PPI At 300 PPI
A4 Paper 8.27 × 11.69 in 794 × 1123 px 2481 × 3507 px
Letter Size 8.5 × 11 in 816 × 1056 px 2550 × 3300 px
Photo 4×6 4 × 6 in 384 × 576 px 1200 × 1800 px
Photo 5×7 5 × 7 in 480 × 672 px 1500 × 2100 px
Photo 8×10 8 × 10 in 768 × 960 px 2400 × 3000 px
Banner 3×6 ft 36 × 72 in 3456 × 6912 px 10800 × 21600 px

Conversion Formula and Steps

Formula: Pixels = Inches × PPI (Pixels Per Inch)

Converting inches to pixels requires knowledge of the pixel density, measured in PPI (Pixels Per Inch) or DPI (Dots Per Inch). The conversion process is straightforward once you know the resolution of your target medium.

Step-by-Step Conversion Process

Step 1: Identify the number of inches you want to convert. This could be a physical measurement or a dimension specification.

Step 2: Determine the PPI of your target medium. For web design, 96 PPI is standard. For high-quality print, 300 PPI is typical. For screens, check the device specifications.

Step 3: Multiply the inch value by the PPI value. For example, 5 inches at 96 PPI equals 480 pixels (5 × 96 = 480).

Step 4: Round the result if necessary. Pixel values are typically whole numbers, so round to the nearest integer for practical applications.

Example Conversion: To convert 3.5 inches to pixels at 150 PPI: 3.5 × 150 = 525 pixels. This means a 3.5-inch line on a 150 PPI display would contain 525 pixels.

PPI vs DPI

PPI (Pixels Per Inch)

PPI refers to the pixel density of digital displays and images. It measures how many individual pixels fit into one linear inch of a screen or digital image. Higher PPI values mean sharper, more detailed images on screens.

DPI (Dots Per Inch)

DPI specifically relates to printed output and measures how many ink dots a printer places within one linear inch. Printers use DPI to determine print quality, with higher DPI producing finer detail in physical prints.

Whilst these terms are often used interchangeably, PPI is the correct term for digital screens and images, whilst DPI applies to printers and printed materials. For inch to pixel conversions, you’ll primarily work with PPI values.

Important Note: When converting for web design, always use 96 PPI as the standard. For print-ready graphics, use 300 PPI or higher to prevent pixelation.

Common PPI Values

Device/Medium Typical PPI Description
Standard Web 96 PPI Default resolution for web browsers and CSS pixels
Older Screens 72 PPI Legacy standard for displays and screen graphics
HD Laptops 120-150 PPI Modern laptop displays with full HD resolution
Tablets 160-264 PPI iPad and Android tablets typically fall in this range
Smartphones 240-500+ PPI Modern phones feature extremely high pixel densities
4K Monitors 160-185 PPI 27-inch 4K displays offer sharp desktop viewing
Print (Standard) 300 PPI Industry standard for professional print quality
Print (Premium) 600+ PPI Fine art prints and high-end publications

Design Context Considerations

Web Design

For web development, CSS pixels operate at 96 PPI regardless of the actual screen density. This means when you specify an element as 96 pixels wide in CSS, it will display as approximately one inch on most screens. Modern browsers handle high-DPI displays automatically through device pixel ratios.

Print Design

Print requires significantly higher resolutions than screens. A 1-inch square at 300 PPI contains 90,000 pixels (300 × 300), whilst the same square at 96 PPI contains only 9,216 pixels. Always convert to at least 300 PPI for professional printing to avoid visible pixelation.

Mobile Applications

Mobile devices feature varying PPI values, with modern smartphones ranging from 240 to over 500 PPI. App developers must account for these differences by providing multiple asset resolutions (1×, 2×, 3×) to maintain visual quality across devices.

Retina Displays: Apple’s Retina displays feature PPI values high enough that individual pixels become imperceptible at typical viewing distances. iPhone displays commonly use 326 PPI, whilst iPad Retina displays use 264 PPI.

Frequently Asked Questions

How many pixels are in one inch?
The number of pixels in one inch depends on the PPI (pixels per inch) of the display or image. At the web standard of 96 PPI, one inch equals 96 pixels. For print at 300 PPI, one inch contains 300 pixels. There is no fixed conversion without knowing the PPI value.
What PPI should I use for web graphics?
For web graphics, 96 PPI is the standard resolution. This matches the CSS pixel specification and provides optimal file sizes whilst maintaining good visual quality on screens. Higher PPI values unnecessarily increase file sizes without improving web display quality.
Why does my image look blurry when printed?
Images created at low PPI (such as 72 or 96 PPI) lack sufficient pixels for quality printing. Printers require 300 PPI for professional results. When a low-resolution image is printed, each pixel must be enlarged, causing visible blurriness or pixelation. Always create print graphics at 300 PPI or higher.
Can I increase PPI to improve a low-resolution image?
Artificially increasing PPI in image editing software does not add detail or improve quality. It simply interpolates existing pixels to fill the higher resolution, often resulting in a softer or blurrier image. The only way to achieve true high resolution is to capture or create the image at the desired PPI from the start.
What’s the difference between physical and CSS pixels?
Physical pixels are the actual individual light-emitting elements in a display. CSS pixels are abstract units used in web development, standardised at 96 PPI. On high-density displays, one CSS pixel may correspond to multiple physical pixels (device pixel ratio). This allows consistent sizing across different devices.
How do I determine my screen’s PPI?
To find your screen’s PPI, you need the screen’s resolution (in pixels) and physical diagonal size (in inches). Divide the diagonal resolution by the diagonal size. For example, a 1920×1080 screen with a 24-inch diagonal has approximately 92 PPI. Many device specifications list PPI directly.
Should I convert inches to pixels for responsive web design?
Responsive web design typically uses relative units (percentages, ems, rems, viewport units) rather than fixed pixel values. This allows layouts to adapt to different screen sizes. However, understanding pixel dimensions remains valuable for image sizing, media queries, and specific layout requirements.
What resolution should I use for social media images?
Social media platforms display images on screens, so 72-96 PPI is sufficient. However, focus on the pixel dimensions rather than PPI. Each platform has recommended sizes: Facebook cover photos are 820×312 pixels, Instagram posts are 1080×1080 pixels, and Twitter headers are 1500×500 pixels.

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