Typography Converter
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.
Rem (Base 16px)
Definition: Rem stands for "Root Em." It is similar to Em, but instead of being relative to the parent element, it is always relative to the root (html) element.
History/origin: Rem was introduced in CSS3 to solve the "compounding" problem of Em units, where nested elements would become unintentionally large or small.
Current use: Rem is now the preferred unit for modern, accessible web development because it allows for consistent scaling across an entire website.
Pixel (px) to Rem (Base 16px) Conversion Table
| Pixel (px) [px] | Rem (Base 16px) [rem] |
|---|---|
| 0.01 px | 0.000625 rem |
| 0.1 px | 0.00625 rem |
| 1 px | 0.0625 rem |
| 2 px | 0.125 rem |
| 3 px | 0.1875 rem |
| 5 px | 0.3125 rem |
| 10 px | 0.625 rem |
| 20 px | 1.25 rem |
| 50 px | 3.125 rem |
| 100 px | 6.25 rem |
| 1000 px | 62.5 rem |
How to Convert Pixel (px) to Rem (Base 16px)
1 px = 0.0625 rem
1 rem = 16 px
Example: convert 15 px to rem:
15 px = 15 × 0.0625 rem = 0.9375 rem
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!
- The "Rem" unit stands for "Root Em." Unlike Em, it always scales relative to the HTML root (usually 16px), making it much easier to manage responsive designs.