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Create a QR code for a link, Wi-Fi, WhatsApp, contact and more, or read one from a photo.
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Roman numeral converter
Turn numbers into Roman numerals and back (1 to 3999), with a chart.
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- Works on any device
About Roman numeral converter
Turn numbers from 1 to 3999 into Roman numerals and back. Letters are I, V, X, L, C, D and M, and a smaller symbol before a larger one subtracts, so IV is 4 and CM is 900. Useful for movie years, clock faces, outlines and tattoos.
How to use Roman numeral converter
- Type the value you want to convert.
- Choose the units to convert from and to.
- See the answer instantly, with a table of every unit and the formula.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
Why does Roman numeral stop at 3999?
Standard notation has no symbol above M (1000), and repeating a letter more than three times is not allowed, so MMMCMXCIX (3999) is the maximum.
Is Roman numeral converter free?
Yes. Roman numeral converter on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.