We use cookies
We use cookies and similar technologies to improve your experience, analyze traffic, and serve relevant ads. You can accept all cookies or decline non-essential ones.
Convert between Roman numerals and decimal numbers instantly
2024 = MMXXIV. Breakdown: M (1000) + M (1000) + X (10) + X (10) + IV (4).
1999 = MCMXCIX. This uses three subtractive pairs: CM (900) + XC (90) + IX (9), making it one of the most complex Roman numerals under 4000.
MCMLXXXIV = 1984. Breakdown: M (1000) + CM (900) + L (50) + XXX (30) + IV (4). Often seen in movie credits and copyright notices.
Standard Roman numeral notation uses the symbol M (1000) as the largest base value. Since a symbol can appear at most 3 times in a row, the maximum is MMMCMXCIX = 3,999. Ancient Romans used a bar notation (vinculum) for larger numbers, but this is rarely used today.
No. The Roman numeral system was developed before the concept of zero was widely adopted in Europe. The Latin word "nulla" (nothing) was sometimes used, but there is no standard Roman numeral symbol for zero.
Subtractive notation is a rule where a smaller numeral placed before a larger one is subtracted. For example, IV = 5 - 1 = 4, and IX = 10 - 1 = 9. Only I, X, and C can be used subtractively, and only before the next two larger symbols (I before V/X, X before L/C, C before D/M).