Common Roman Numerals:
Conversion Steps
0
Characters
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:
- • I = 1
- • II = 2
- • III = 3
- • IV = 4
- • V = 5
Complex Numbers:
- • IX = 9
- • XL = 40
- • XC = 90
- • CD = 400
- • CM = 900
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.