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Roman Numeral Converter
Convert between Roman numerals and decimal numbers (1-3999).
Decimal to Roman
Roman to Decimal
Symbol values
I=1
V=5
X=10
L=50
C=100
D=500
M=1000
About This Tool
Convert any number from 1 to 3999 to its Roman numeral representation, or convert Roman numerals back to decimal. Input validation ensures correct Roman numeral syntax. Includes a handy reference table of all Roman numeral symbol values.