Roman numeral converter
Type a number or a Roman numeral and get its equivalent instantly.
Everything runs in your browser. Nothing you type or paste is sent to a server.
How to use the roman numeral converter
- 1
Type a number from 1 to 3999, or a Roman numeral.
- 2
The other field updates automatically.
- 3
Copy the result.
About this tool
Handy for chapters, centuries, dates on monuments, tattoos or the names of kings and popes.
Only standard notation is accepted: 4 is IV, not IIII, and 99 is XCIX, not IC.
Frequently asked questions
Why is the maximum 3999?
Standard Roman notation has no symbol for 5000, so 3999 (MMMCMXCIX) is the largest number it can write.
How is 2026 written?
MMXXVI: two thousand (MM), twenty (XX) and six (VI).