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Roman Numeral Converter

New

Convert Roman numerals to numbers and vice versa

MMXXIV

Examples

Browser-based, files never uploaded Instant results Works on any device

How to use Roman Numeral Converter

  1. 1Enter Arabic number or Roman numeral
  2. 2Conversion is instant
  3. 3See breakdown of values

About this tool

Convert between Roman numerals and Arabic numbers. Works for numbers 1–3999. Shows conversion breakdown.

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Frequently asked questions

What is the largest Roman numeral?

MMMCMXCIX = 3999. Traditional Roman numerals go up to 3999.