Roman Numeral Converter
Convert between Arabic numbers and Roman numerals (1-3999)
Roman Numeral Guide
Basic Symbols
I
1
V
5
X
10
L
50
C
100
D
500
M
1000
Rules
- • Symbols are written from largest to smallest, left to right
- • When a smaller symbol appears before a larger one, subtract it (IV = 4, IX = 9)
- • Only I, X, and C can be used as subtractive numerals
- • A symbol cannot be repeated more than three times in succession
Examples
I
1
IV
4
IX
9
XXVII
27
XLIX
49
XCIX
99
CDXLIV
444
MCMXCIV
1994
MMXXIV
2024
MMMCMXCIX
3999