Leaderboard ad · 728×90
px ↔ rem Converter
Convert between px and rem based on your root font size.
Formula: rem = px ÷ root, px = rem × root
Common values (root 16px)
12px→0.75rem14px→0.875rem16px→1rem18px→1.125rem20px→1.25rem24px→1.5rem32px→2rem48px→3remIn-content ad · responsive
Related Tools
UUID Generator
Generate UUID v4 identifiers in bulk with one-click copy — handy for developers and testers.
JSON Formatter
Format, minify and validate JSON online with clear error messages.
Timestamp Converter
Convert Unix timestamps to dates and back, in seconds or milliseconds.
Text to Base64
Encode and decode Base64 with full UTF-8/Chinese support.
SHA Hash Calculator
Compute SHA-1, SHA-256 and SHA-512 hashes locally in your browser.
JWT Decoder
Decode JWT header and payload with automatic expiration timestamps.