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Roman Numeral Converter

Arabic 1–3999 and standard subtractive Roman, live as you type. I V X L C D M.

Examples

Roman MMXXVI

100% Client-Side Processing

What Roman Numeral Converter is

Two-way Arabic 1–3999 and standard subtractive Roman numerals, live as you type.

How to use it

  1. Type a number or a Roman string.
  2. Read the other side.
  3. Copy the line you need.

Common uses

Check a clock face, an outline heading, or a film-year title. Values outside 1–3999 are out of range. Overlines for thousands above 3999 are not supported.

Privacy

Numbers and text stay in this tab. We do not log them. Refresh the page and the form is blank. We never see what you copy.