Roman Numeral Converter
Convert numbers to Roman numerals and back. Supports 1 to 3999.
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Symbol Reference
Frequently Asked Questions
What are Roman numerals?
Roman numerals are a numeral system originating in ancient Rome. They use combinations of letters from the Latin alphabet — I, V, X, L, C, D, and M — to represent numbers. They are still widely used today on clock faces, in film titles, and for numbering chapters and events.
What is the largest number in Roman numerals?
Using standard notation, the largest number is 3999, written as MMMCMXCIX. Numbers 4000 and above require special extended notation not covered by this tool.
Why does IV mean 4?
Roman numerals use a subtractive principle. When a smaller value appears before a larger one, it is subtracted rather than added. IV means 5 minus 1, which equals 4. Similarly, IX means 9, XL means 40, and CM means 900.
Where are Roman numerals still used today?
Roman numerals appear on clock faces, Super Bowl numbering, movie sequels, book chapters, year inscriptions on buildings, copyright dates in film credits, and in academic and legal documents.
What is 2026 in Roman numerals?
2026 is written as MMXXVI. MM = 2000, XX = 20, VI = 6.