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Pixel (px)

Definition: A pixel (short for picture element) is the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device.

History/origin: The concept of pixels dates back to the early days of television and computer monitors. In modern web standards (CSS), a pixel is defined as 1/96th of an inch.

Current use: Pixels are the absolute standard for web design, screen resolution, and digital photography.

Inch (in)

Definition: An inch is a physical unit of length. In digital CSS standards, 1 inch is mapped to exactly 96 pixels.

History/origin: The inch has its origins in the imperial system. Its digital mapping was standardized to ensure that physical sizes could be somewhat represented on screen.

Current use: Used when designers need to ensure an element has a specific physical size when printed from a web browser.

Pixel (px) to Inch (in) Conversion Table

Pixel (px) [px]Inch (in) [in]
0.01 px0.00010417 in
0.1 px0.00104167 in
1 px0.01041667 in
2 px0.02083333 in
3 px0.03125 in
5 px0.05208333 in
10 px0.10416667 in
20 px0.20833333 in
50 px0.52083333 in
100 px1.04166667 in
1000 px10.41666667 in

How to Convert Pixel (px) to Inch (in)

1 px = 0.01041667 in
1 in = 96 px

Example: convert 15 px to in:
15 px = 15 × 0.01041667 in = 0.15625 in

Did You Know?

  • Did you know? In web design, a "Pixel" (px) is actually a relative unit. On modern high-resolution screens (like Retina displays), one CSS pixel can actually consist of multiple physical device pixels!
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