Roman Numeral Converter
Convert whole numbers from 1 to 3999 into Roman numerals, or read a Roman numeral as a number. Noncanonical spellings are rejected.
- Free
- No sign-up
- Runs in your browser
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How this calculation works
The converter uses subtractive forms IV, IX, XL, XC, CD and CM. It accepts lowercase Roman input, but rejects alternatives such as IIII, zero, negative values and overline notation.
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Discover VISU LinkHow to use it
- Choose an operation and enter the text, or choose a generation quantity.
- Run the tool and check any format warning before using the result.
- Copy the result when ready. Clear the fields to remove it from this page.
Examples
Example 1
2026 becomes MMXXVI.
Example 2
MCMXCIV becomes 1994.
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Questions
What does this tool do?
Convert whole numbers from 1 to 3999 into Roman numerals, or read a Roman numeral as a number. Noncanonical spellings are rejected.
What are its format limits?
The converter uses subtractive forms IV, IX, XL, XC, CD and CM. It accepts lowercase Roman input, but rejects alternatives such as IIII, zero, negative values and overline notation.
Can I see a worked example?
2026 becomes MMXXVI.
Is this text sent to a server?
Text and results stay on this page. Nothing is uploaded or automatically saved. Copying sends the result to your clipboard; downloading creates a local file.
Do I need an account?
No account is required to use the tool or copy its result. VISU services are optional.