Roman Numeral Converter

Why use Roman Numeral Converter?

Roman Numeral Converter converts instantly and accurately in your browser, showing every unit or format side by side so you can copy the one you need.

• Runs instantly in your browser — nothing to install, nothing uploaded.
• Completely free, with no account, no watermarks and no usage limits.
• Range: 1–3999
• Type a number or a Roman numeral.
• Works on any device — desktop, tablet and phone — and is fully keyboard accessible.

How to use Roman Numeral Converter

1. Type a number or a Roman numeral.
2. It detects the direction.
3. See the converted value.
4. Copy the result.

Examples

• 2026 is MMXXVI.
• Decoding a movie's copyright year.

Supported formats

• Range: 1–3999

Limitations

• Standard Roman numerals only (no vinculum for large numbers).