How to convert number to roman numerals

How to convert decimal number to roman numerals.

Decimal number to roman numerals conversion

For decimal number x:

    1. From the following table, find the highest decimal value v that is less than or equal to the decimal number x

      and its corresponding roman numeral n:

 

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

 

  1. Write the roman numeral n that you found and subtract its value v from x:

    x = - v

  2. Repeat stages 1 and 2 until you get zero result of x.

Example #1

x = 36

Iteration #Decimal number (x)Highest decimal value (v)Highest roman numeral (n)Temporary result
13610XX
22610XXX
31610XXXX
465VXXXV
511IXXXVI

 

Example #2

x = 2012

Iteration #Decimal number (x)Highest decimal value (v)Highest roman numeral (n)Temporary result
120121000MM
210121000MMM
31210XMMX
421IMMXI
511IMMXII

 

Example #3

x = 1996

Iteration #Decimal number (x)Highest decimal value (v)Highest roman numeral (n)Temporary result
119961000MM
2996900CMMCM
39690XCMCMXC
465VMCMXCV
511IMCMXCVI

 

 

 

How to convert roman numerals to number ►

 


See also

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