Roman Numeral Converter
Convert between Roman numerals and numbers (1-3999).
Valid characters: I, V, X, L, C, D, M
Enter a number between 1 and 3999
Roman Numeral Symbols:
I
1
V
5
X
10
L
50
C
100
D
500
M
1000
Examples:
IV = 4
IX = 9
XL = 40
XC = 90
CD = 400
CM = 900
When a smaller numeral appears before a larger one, it's subtracted (e.g., IV = 4, IX = 9). Otherwise, numerals are added together.
How to Use Roman Numeral Converter
- 1
Enter Roman numeral or number.
- 2
Convert.
Frequently Asked Questions
What are Roman numerals?▾
Ancient number system using I, V, X, L, C, D, M.
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