Roman Numeral Converter
Convert numbers ⇄ Roman numerals, from 1 to 3999.
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About the Roman Numeral Converter
Roman numerals still mark copyright dates in film credits, chapters in books, clock faces, monarchs (Charles III), and every Super Bowl. This converter works both directions at once: type 2026 to get MMXXVI, or paste MMXXVI to get 2026.
Both sides are validated — numbers must stay within the classical 1–3999 range, and malformed numerals are rejected with a clear message rather than a wrong answer.
How to use it
- 1Type a number (1–3999) to see its Roman numeral.
- 2Or paste a Roman numeral to see its value.
- 3Copy the side you need.
Frequently asked questions
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