• Effortless Conversions Instantly convert px, em, and rem without any hassle.
• Consistent Designs Maintain consistency across devices with precise unit conversions.
• Time-Saving Integration Copy and paste converted values directly into your code for a seamless workflow.

What Are Pixel (px) and Em (em) Values?

Understanding the difference between px and em is key to creating flexible and responsive designs. Here's a quick overview:

Pixel (px)

A pixel is a fixed unit of measurement used in web design. It represents a tiny square on a screen, making it an absolute unit. For example, if you set an element's width to 100px, it will always measure 100 pixels wide, regardless of the user's browser or screen size. Pixels are precise and predictable but don't scale well, which can make them less flexible on devices with varying resolutions or accessibility needs.

Em (em)

An em is a relative unit of measurement based on the font size of the element's parent. If the parent element has a font size of 16px, then 1em = 16px. Examples: If a parent element's font size is 16px, 2em = 32px (16px × 2). If the parent element's font size is 20px, then 1em = 20px. Ems scale according to the parent’s font size, making them useful for responsive designs but sometimes difficult to manage due to nesting.