Roman Numeral Converter
Convert between Roman numerals and decimal numbers with validation and historical reference
Roman Numeral Reference
I
1
V
5
X
10
L
50
C
100
D
500
M
1000
How to Use This Tool
Enter a decimal number to convert to Roman numerals, or enter a Roman numeral to convert to decimal.
The conversion happens in real time as you type.
About This Tool
Roman Numeral Converter translates between decimal numbers and Roman numerals. Supports numbers from 1 to 3,999 (MMMCMXCIX). Validates input and shows instant results in both directions.
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