Why you should stop using Pixels
Pixels (`px`) are absolute structural units. If a web developer sets paragraphs to `16px`, visually impaired users who set their system default browser font size to `24px` will see the text locked in size. Switching your font sizes, padding, and layout metrics to `rem` allows your application to act like elastic rubber scaling proportionally based on system font size preferences.
Understanding the Match Equation
A `rem` refers to the root `<html>` element. If the root font-size is `16px` (web standard norm), then `1rem` mathematically equates to `16px`, and `2rem` equates to `32px`. You can dynamically tweak the 'Base Font Size' controller parameter if your framework overrides standard CSS Resets using a `62.5%` base hack (representing `10px`).
Tailwind Workflow
When interpreting Figma design specs from UX designers who annotate UI cards using absolute '24px margins', type `24` into this calculator directly to fetch its precise `1.5rem` value equivalent ready to code.