Roman numeral converter

Convert numbers to Roman numerals and back (1 to 3,999).

Runs in your browser
Free
No sign-up

How to use it

Paste or type your text in the box.
Adjust the options if you need to.
Copy the result or download it.

Questions

Is my text sent to a server?

No. Everything happens in your browser. Your text is not uploaded or stored.

Is it free?

Yes, you can use it for free. A subscription removes limits and unlocks premium tools.