📝 Text & List
Number to Roman Numeral
Convert any number (1–3999) to Roman numerals instantly. Free.
The To Roman is a free online tool that helps you convert any number (1–3999) to roman numerals instantly. free It runs in your browser with no sign-up, downloads, or installation needed. All processing happens locally — your data stays on your device.
To Roman
Roman numeral reference
${[["I","1"],["IV","4"],["V","5"],["IX","9"],["X","10"],["XL","40"],["L","50"],["XC","90"],["C","100"],["CD","400"],["D","500"],["CM","900"],["M","1000"]].map(([r,n])=>`
${r}${n}
`).join("")}
How to use the To Roman
1
Roman numeral rules
Roman numerals use letters: I(1), V(5), X(10), L(50), C(100), D(500), M(1000). Subtractive notation: IV=4, IX=9, XL=40, XC=90, CD=400, CM=900. Repeat up to 3 times (III=3, XXX=30, CCC=300, MMM=3000). Maximum standard value is 3999 (MMMCMXCIX).
Frequently asked questions
Is the To Roman free to use?
Yes, the To Roman is completely free. There is no sign-up, no account required, and no limit on how often you can use it.
Is my text private when using the To Roman?
Yes, all text processing happens in your browser. Your text is not sent to any server and is not stored anywhere outside your device.
What devices does the To Roman work on?
The To Roman works on any device with a modern web browser — desktop, laptop, tablet, or phone. It is mobile-friendly and works offline once the page has loaded.