Roman Numeral Converter
Convert between Roman numerals and Arabic numbers.
How to use
Runs entirely in your browser. Live updates or click to run. No signup, no tracking, no data sent anywhere.
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Part of 71 free tools by Auburn AI. Category: Converters
About this tool
The Roman Numeral Converter translates numbers between standard Arabic digits and classical Roman numeral notation in both directions. It handles values from 1 to 3999, covering the full range of traditional Roman numeral usage. Useful for students, designers, historians, writers, and anyone who needs accurate numeral conversions without doing the math by hand. No account or download required.
How to use it
- Choose your conversion direction: Arabic to Roman, or Roman to Arabic.
- Type your number into the input field provided.
- Click the Convert button to run the conversion instantly.
- Copy the result from the output field using the copy button.
- Clear the field and enter a new value to run another conversion.
Pro tips
- Roman numerals only go up to 3999 (MMMCMXCIX); anything higher requires non-standard notation this tool does not support.
- When entering Roman numerals, capitalization does not matter, so both ‘xiv’ and ‘XIV’ will return the same result.
FAQ
Why is zero not available in Roman numerals?
Roman numeral systems predate the concept of zero as a number, so there is no Roman numeral representation for it. The converter only accepts values of 1 or greater.
Can I convert years like 2024 into Roman numerals?
Yes, any whole number from 1 to 3999 works, including years. Enter 2024 and the converter will return MMXXIV.
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