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Roman numeral converter

Turn a number from 1 to 3999 into Roman numerals, or read a Roman numeral as a number.

Private by design: this tool runs in your browser. Nothing you add is uploaded.

How to use it

  1. Type a normal number, such as 2026, to see it in Roman numerals.
  2. Or type Roman numerals, such as MMXXVI, to see the number.
  3. Copy the answer.
Screenshot of the Roman numerals tool on Sureno, in use
Roman numerals in use: a real screenshot of this page.

Questions and answers

Why does it stop at 3999?

Classic Roman numerals have no standard mark for 4000 and above. 3999 is MMMCMXCIX.

How do Roman numerals work?

I is 1, V 5, X 10, L 50, C 100, D 500 and M 1000. A smaller letter before a bigger one is taken away: IV is 4 and IX is 9.

How do I write the year in Roman numerals?

Type the year in the first box. 2026 is MMXXVI.

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