Roman Numeral Converter
Convert between Arabic and Roman numerals
Frequently Asked Questions
What are Roman numerals?
Roman numerals are a numeral system originating in ancient Rome that uses combinations of letters from the Latin alphabet (I, V, X, L, C, D, M) to represent numbers.
What numbers can be converted?
This tool supports conversion for numbers 1-3999. Roman numerals traditionally don't have standardized representations for zero or numbers above 3999.
How do Roman numeral conversions work?
Converting to Roman numerals uses subtraction notation (e.g., IV for 4, IX for 9) and additive notation (e.g., VI for 6, XI for 11). Converting from Roman numerals follows the same principles in reverse.
Where are Roman numerals still used today?
Roman numerals are commonly seen on clocks, in movie credits for copyright years, chapter numbering in books, monarch names (Queen Elizabeth II), and formal documentation.