Roman Numeral Converter
Instantly convert numbers between the Roman and Arabic numeral systems, from 1 to 3999.
Enter a value in either field
The other field will update automatically.
How to Use
Start typing a valid number (1-3999) or Roman numeral in either field. The calculator will automatically convert it.
How to Use
- To Convert from Arabic: Enter a number from 1 to 3999 in the "Arabic Number" field. The Roman numeral will appear automatically.
- To Convert from Roman: Type a valid Roman numeral in the "Roman Numeral" field. The Arabic number will appear automatically.
- Reset: Click the "Reset" button to clear both fields and start over.