Roman numeral converter

Convert any Roman numeral to an Arabic numeral. See formula to understand Roman numerals letter by letter.


Convert Roman number:


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Formula:


This converter accepts Roman numerals in conventional, alternative and archaic forms. It does not verify the number you type is in a format that is common today.

Convert Arabic to Roman? See Roman numerals complete list.

1 = I 5 = V 6 = 10 = X 50 = L = ↆ 100 = C 500 = D = IↃ 1,000 = M = CIↃ = ↀ 5,000 = IↃↃ = ↁ 10,000 = CCIↃↃ = ↂ 50,000 = IↃↃↃ = ↇ 100,000 = CCCIↃↃↃ = ↈ 500,000 = IↃↃↃↃ 1,000,000 = CCCCIↃↃↃↃ

©Tuomas Salste