REM Converter
Convert a non-standard site's rem value to a standard 16px-based rem. Set the site's root font-size (px) below. This preference is saved locally.

Example: if the site uses html { font-size: 14px }, enter 14. Default is 16.

Paste a rem value from the non-standard site.

Formula: standardRem = sourceRem × (basePx / 16)

Tip: If the site's base is 14px and they use 0.875rem, then px = 0.875 × 14 = 12.25px and standard rem = 12.25 / 16 = 0.765625rem.