Roman Numeral Converter

Converts between regular numbers and Roman numerals. Type a number (1 to 3999) to get the Roman numeral, or enter a Roman numeral to convert it back. Covers everything from I to MMMCMXCIX.

How to use

  1. Pick a direction: number to Roman numeral or Roman numeral to number.
  2. Enter a number between 1 and 3999, or type the Roman numeral.
  3. Copy the result. The breakdown of each numeral is shown too.