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Roman Numeral Converter

Convert a number into Roman numerals, or convert Roman numerals back into a number.

How to use the Roman Numeral Converter

  1. Type a number to get Roman numerals.
  2. Or type Roman numerals to get the number.
  3. Both update instantly.

100% free, no sign-up, and it all runs in your browser — your data never leaves your device.

FAQ

What range works?

Standard Roman numerals cover 1 to 3999.

Add this tool to your website — free

Paste this where you want the tool to appear. It links back to ToolKraken.

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