Is Roman Numeral Converter free?

Yes, Roman Numeral Converter is completely free to use with no signup required.

Does Roman Numeral Converter send my data to a server?

No. Roman Numeral Converter runs entirely in your browser using client-side JavaScript. Your data never leaves your device.

Convert any number (1–3999) to Roman numerals or decode Roman numerals to Arabic. Works offline in your browser.

DevTab

Never leaves your browser

Convert between Arabic integers (1–3999) and Roman numerals bidirectionally in the browser.

Arabic Number (1–3999)

MMXXIV

= 2024

Common conversions