px Dev

PX ↔ REM / EM Converter

Convert pixels to REM and EM and vice versa with configurable base. Reference table with the most common CSS sizes. Essential for web.

Base size (root font-size): px

Pixels (px)

REM

EM (relative to parent)

px	rem	pt (aprox.)

REM vs EM vs PX

px: absolute size, does not scale with user preferences.

rem: relative to the root element (html). Scalable. Recommended for accessible typography.

em: relative to the parent element. Useful for padding and margin proportional to local text.

Transform any text into strikethrough text using Unicode combining characters. Works on social networks.

Generate creepy Zalgo text with overlapping diacritical characters. Control the intensity of the effect.

Compare two texts and see the differences highlighted line by line. Useful for reviewing documents and code.