Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals back to numbers, instantly and both ways.
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How to use
- 1Choose a direction: number to Roman numeral, or Roman numeral to number
- 2Type your input
- 3Copy the converted result
Why use this tool?
Roman numerals show up in book chapters, movie sequels, clock faces, outlines, and copyright years, but converting them by hand is easy to get wrong on larger numbers. This tool converts instantly in both directions and validates malformed Roman numerals.