How to convert roman numerals to number

How to convert roman numerals to decimal number.

Roman numerals to decimal number conversion

For roman numeral r:

1. From the following table, find the highest roman numeral (n) with the highest decimal value (v)

   that is taken from the left part of the roman numeral r:

 

Roman numeral (n)	Decimal value (v)
I	1
IV	4
V	5
IX	9
X	10
XL	40
L	50
XC	90
C	100
CD	400
D	500
CM	900
M	1000

 

2. Add to the decimal number x the value v of the roman numeral that you found:

   x = x + v

3. Repeat stages 1 and 2 until you get all the roman numerals of r.

Example #1

r = XXXVI

Example #2

r = MMXII

Example #3

r = MCMXCVI

How to convert number to roman numerals ►

See also

• Roman numerals converter
• Date to roman numerals converter
• Roman numerals chart
• Number conversion

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