math

Roman Numeral Converter

Convert Arabic numbers (1–3999) to Roman numerals and vice versa. Validates input and shows errors instantly.

How to use Roman Numeral Converter

  1. 1Paste your input in the panel above or use the example data if available.
  2. 2Choose an action — format, generate, convert, encode, or analyze.
  3. 3Your result appears instantly. Use Copy to grab it, or Download if a file option is shown.

Runs entirely in your browser

Nothing you type, paste, generate, or upload leaves your device.

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