Easily convert pixels to REM and vice versa. Adjust root font size, preview live changes, and copy clean CSS code instantly.
Test contrast ratio between foreground and background colors. Ensure WCAG AA/AAA accessibility compliance with live preview and pass/fail indicators.
Instantly calculate matching width or height while maintaining original aspect ratio. Includes visual preview to understand scaling better.
Generate responsive CSS clamp() values for typography and spacing. Preview how the font size looks across mobile, tablet, and desktop screen widths with copy-ready CSS output.
Calculate ideal CSS line-height based on your font size. Supports unitless, px, rem, and em units. Includes visual preview and copyable CSS output.
Calculate and preview column widths and span values in CSS Grid. Separate output for container and child elements with editable column and gap controls.
Convert CSS units interactively with support for px, rem, em, %, vh, and vw. Includes live preview, custom root font and viewport size, and CSS output.
This calculator helps you convert fixed pixel values into REM units, ensuring your designs are flexible and accessible across devices.
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