No, both MCMLXXXIV and mcmlxxxiv work.

Are subtractive forms allowed?

Yes, IV, IX, XL and the like are handled correctly.

🔢

Roman to Decimal

Convert a Roman numeral back into a normal number. Local, free, no signup.

No signup100% in your browserFree forever

ROMAN

NUMBER

Is case important?: No, both MCMLXXXIV and mcmlxxxiv work.
Are subtractive forms allowed?: Yes, IV, IX, XL and the like are handled correctly.