Roman numeral converter
Convert numbers to Roman numerals and back.
How to useConvert to Roman numerals.
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Roman numeral converter: what it is for
The converter turns regular numbers into Roman numerals and back, checking whether the Roman numeral is written correctly.
Roman numerals show up in centuries, book chapters, clocks, Super Bowls and the names of kings and popes.
How to use
- Type a number or a Roman numeral.
- The conversion appears instantly.
- Copy the result.
When to use it
- Writing centuries in papers.
- Numbering chapters and events.
- Reading dates on monuments and movie credits.
Frequently asked questions
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.