About 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. This converter allows you to transform standard Arabic numbers (1, 2, 3, etc.) into Roman numerals.
How to Use This Tool:
- Enter an Arabic number between 1 and 3999 in the input field
- Click "Convert to Roman Numeral" to see the result
- The converter will validate your input and show the Roman numeral equivalent
Roman Numeral Values:
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- D = 500
- M = 1000
Common Examples:
3
III
4
IV
9
IX
14
XIV
40
XL
90
XC
400
CD
900
CM
1994
MCMXCIV
2023
MMXXIII
Conversion Rules:
- Numbers are constructed by combining letters and adding their values
- When a smaller numeral appears before a larger one, it's subtracted (IV = 4, IX = 9)
- When a smaller numeral appears after a larger one, it's added (VI = 6, XI = 11)
- The same symbol can't be used more than three times in a row (III = 3 is valid, IIII is invalid)
- Only I, X, and C can be used for subtraction
- Maximum number that can be represented in standard form is 3999 (MMMCMXCIX)