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Roman Numeral Converter

Convert integers from 1 to 3999 into Roman numerals, or decode canonical Roman notation back to decimal.

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Uses subtractive forms such as IV and IX. Zero, negative numbers, overbars and noncanonical forms such as IIII are rejected.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

Come si usa

  1. Convert integers from 1 to 3999 into Roman numerals, or decode canonical Roman notation back to decimal.
  2. Choose the mode or options, then run the tool.
  3. Review the result, then copy or download the TXT file.

Esempio

2026 → MMXXVI

Dettagli e limiti

Text stays in your browser; it is not sent to a conversion server.

Riferimenti

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