ROMAN NUMERALS
Convert between Arabic and Roman numerals, and perform arithmetic in the ancient notation system.
Arabic
Roman
Roman →
Arabic
Roman Arithmetic
+
−
×
÷
=
Reference
M
1000
CM
900
D
500
CD
400
C
100
XC
90
L
50
XL
40
X
10
IX
9
V
5
IV
4
I
1
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