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Roman Numerals Converter

Convert numbers to Roman numerals and back (1–3999).

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AHow to use

  1. 01 Choose the direction: number → Roman or Roman → number.
  2. 02 Enter a value (2026 or MMXXVI).
  3. 03 Copy the converted result.

QFAQ

Why only up to 3999? ＋

Classical Roman numerals have no zero and repeat no symbol more than three times, which limits them to MMMCMXCIX (3999). Larger numbers need overline notation.

Are invalid numerals rejected? ＋

Yes — the converter re-encodes the parsed value and compares, so malformed forms like IIII or VX are rejected instead of guessed.

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