ⅫRoman Numeral Converter
Number ⇄ Roman numerals (1–3999).
About the Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals back to numbers (1 to 3999). Handy for dates, chapters, clock faces and homework. Free online Roman numeral converter.
How to use the Roman Numeral Converter
- 1Enter your numbers into the Roman Numeral Converter fields above.
- 2Adjust the rate, period, units or other options to match your situation.
- 3Your result is calculated instantly as you type — there's no submit button.
- 4Nothing is stored or uploaded; every calculation runs privately in your browser.
Why use this tool?
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Private by design
The Roman Numeral Converter runs entirely in your browser — nothing you enter is uploaded to a server.
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Free, no signup
Use it as much as you like. There's no account, no paywall and no watermark.
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Fast & instant
Results appear the moment you type or click — no waiting, no page reloads.
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Works anywhere
Any device or browser, even offline once the page has loaded.
Frequently asked questions
What range does it support?＋
Standard Roman numerals from 1 to 3999, in both directions — number to Roman and Roman to number.