Roman Numeral Converter
Convert between Roman numerals and Arabic numbers instantly.
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Quick Examples
Roman Numeral Reference
I
1
V
5
X
10
L
50
C
100
D
500
M
1000
What Are Roman Numerals?
Roman numerals are a numeral system originating in ancient Rome, using combinations of letters (I, V, X, L, C, D, M) to represent values. They are still used today for clock faces, book chapters, movie sequels, and formal documents.
Conversion Rules
- Addition: Symbols placed after equal or greater values add (VI = 5+1 = 6).
- Subtraction: Smaller symbols before larger ones subtract (IV = 5-1 = 4).
- Maximum: Standard Roman numerals only go up to 3,999 (MMMCMXCIX).
Common Uses Today
- Clock Faces: Traditional clocks use Roman numerals.
- Movies: Sequels often use Roman numerals (Rocky III, Star Wars IV).
- Super Bowl: NFL uses Roman numerals for each Super Bowl.
- Outlines: Academic papers often use I, II, III for sections.