Similarly, 999 cannot be IM and 1999 cannot be MIM. That means that 99 is XCIX, 90 + 9, but never should be written as IC. You must separate ones, tens, hundreds, and thousands as separate items.
You would not put more than one smaller number in front of a larger number to subtract.
The input must be in the range of 1 - 4999, or I to MMMMCMXCIX.Ī smaller number in front of a larger number means subtraction, all else means addition. The conversions on this site require the use of JavaScript so please enable before continuing.įor assistance in enabling JavaScript, please contact the webmaster.Įnter a whole number such as 2003, or a Roman numeral such as MMIII, then click Convert.
