Convert a Roman numeral to Arabic, or an Arabic numeral to Roman. See formula to understand Roman numerals letter by letter.
Convert Roman or Arabic:
|1 = I 5 = V 10 = X 100 = C 500 = D 1,000 = M|
|6 = ↅ 50 = ↆ 500 = IↃ 1,000 = 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|
All number forms might not show up due to missing font support. See special numbers. For easier input, you may type I) for 500, (I) for 1,000 etc.
This converter accepts Arabic and Roman numerals. Roman numerals can be given in conventional, alternative and archaic forms. The converter does not verify the Roman number you type is in a commonly used format. Arabic numbers are accepted in range 1…4,999,999. For even larger numbers see list.
Roman numerals complete list