Online Roman numeral calculator

Standard Number =
 
Roman Number =

Roman numerals, the numeric system used in ancient Rome, The online Roman Numerals calculator converts Roman numerals to Hindu-Arabic numerals or vice versa.

The numbers 1 to 10 can be expressed in Roman numerals as I, II, III, IV, V, VI, VII, VIII, IX, X.

Roman Number Conversion

Standard Number Roman Number
1 I
5 V
10 X
50 L
100 C
500 D
1000 M
5000 v
10000 x
50000 l
100000 c
500000 d
1000000 m