Is Roman Numeral Converter free to use?

Yes, Roman Numeral Converter is completely free. No account, no sign-up, and no hidden fees required.

Does Roman Numeral Converter work offline?

Roman Numeral Converter runs entirely in your browser. Once the page is loaded, most features work without an internet connection.

Your data never leaves your device. All processing happens locally in your browser — nothing is uploaded to any server.

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Convert numbers to Roman numerals and Roman numerals back to numbers — with step-by-step breakdown

1만 명 이상의 개발자가 사용

Arabic number (1–3999)

Result

MMXXVI

MM2 × 1000 = 2000

XX2 × 10 = 20

V1 × 5 = 5

I1 × 1 = 1

2×M(1000) + 2×X(10) + 1×V(5) + 1×I(1) = 2026

Quick examples

Roman numeral rules:

• Symbols are generally written from largest to smallest (left to right).

• A smaller symbol before a larger one is subtracted (e.g. IV = 4, IX = 9).

• Only I, X, and C can be used as subtractive prefixes.

• The range supported is 1–3999 (standard notation).