Roman Numeral Converter
Numbers ↔ Roman numerals
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About the Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals back to numbers (1–3999), with strict validation that rejects malformed numerals like IIII or VX. Includes a quick reference of symbol values — handy for dates, outlines, clock faces, and homework.
How to use
- 1Choose the direction.
- 2Enter a number (1–3999) or a numeral like MMXXVI.
- 3Copy the converted result.
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Roman Numeral Converter is part of DevKit — 100 free, privacy-first tools for developers, students, and everyone, built by Minhazul Ashim. Everything runs in your browser; your data never leaves your machine.