IV
Roman Numerals Converter
Convert numbers to and from Roman numerals instantly. Learn the Roman numeral system with our free converter tool.
Reference Table
History
→
About Roman Numerals Converter
Convert between Roman numerals and Arabic numbers. Learn the Roman numeral system. Perfect for history, clocks, and formal numbering.
Use Cases
Converting dates to Roman numerals
Understanding historical dates
Reading clock faces
Movie copyright years
Educational purposes
How to use
1
Enter a number or Roman numeral
2
View the conversion instantly
3
Learn the numeral values
4
Copy for use
Pro Tips
- I=1, V=5, X=10, L=50, C=100, D=500, M=1000
- Subtraction: IV=4, IX=9, XL=40, XC=90
- Maximum standard is 3999 (MMMCMXCIX)
Frequently Asked Questions
Standard: MMMCMXCIX (3999). Extended systems go higher.
Subtractive notation: 4 is written as "one before five" (IV).
No, Roman numerals have no zero. It was introduced later.