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Roman Numeral Converter

Roman numeral converter tool. Convert Arabic numbers (1-3999) to Roman numerals or Roman numerals to Arabic numbers.

Arabic Number
Result
Read Only

How to use

About this tool

This Roman numeral converter works both ways: Roman to Arabic and Arabic to Roman. Use it for monumental dates, chapter numbering, clock faces, document outlines, or school exercises. Enter a value like MCMXCIX or 1999 and get the equivalent instantly. It works with the usual symbols (I, V, X, L, C, D, M) within the range shown in the interface. Conversion runs in the browser. It is free and you do not need an account—open the page, convert, and copy the result into your document or ticket.

How to use

Enter Roman numerals or a number; the other form is shown.

Use cases

• Format conversion • Copyright/chapter numbers • Education and quizzes • Legacy numbering

FAQ

Q: What does this converter do?
A: It converts both ways: Roman numerals → Arabic numbers and Arabic → Roman.
Q: Which values are accepted?
A: Usual Roman symbols (I, V, X, L, C, D, M) and Arabic integers within the range shown by the tool.
Q: Is it free?
A: Yes. You do not need to sign up.
Q: Does it work without a conversion server?
A: Conversion runs in the browser.