Common Numbers:
Conversion Steps
0
Digits
0
Numerical Value
Simple
Complexity
0ms
Conversion Time
Roman Numeral Reference
I
1
V
5
X
10
L
50
C
100
D
500
M
1000
Additive: I + I + I = III (3)
Subtractive: I before V or X = IV (4), IX (9)
Maximum: 3999 (MMMCMXCIX)
Examples
Basic Numbers:
- • 1 = I
- • 2 = II
- • 3 = III
- • 4 = IV
- • 5 = V
Complex Numbers:
- • 9 = IX
- • 40 = XL
- • 90 = XC
- • 400 = CD
- • 900 = CM
About Roman Numerals
Origin: Roman numerals originated in ancient Rome and were used for counting and mathematics.
Modern Use: Still used for numbering chapters, clock faces, movie sequels, and some formal documents.
Rules: Symbols are additive unless a smaller symbol precedes a larger one (subtractive notation).
Limitations: Cannot represent zero and difficult for complex calculations.