Roman Numeral Converter

What are Roman Numerals?

Roman numerals are a numeral system used in ancient Rome and still used today in areas such as clock faces and book chapters. It consists of seven basic symbols: I, V, X, L, C, D, and M.

Basic Roman Numerals

• I1
• V5
• X10
• L50
• C100
• D500
• M1000

Roman Numeral Rules

• Numerals are generally arranged from largest to smallest (e.g., XVI = 16).
• A symbol cannot be placed between two symbols larger than itself.
• The same symbol can be repeated at most three times (e.g., XXX = 30).
• If a smaller symbol is placed to the left of a larger symbol, the smaller symbol's value is subtracted from the larger symbol's value (e.g., IV = 4).

Popular Roman Numeral Examples