# Python Program To Convert An Integer To A Roman Numeral

Published March 4, 2024 by Jarvis Silva

In this tutorial we will see how to convert a integer to a roman numeral value, Integers are whole numbers like 0,1,-3, 43 etc and roman numerals are basically letters representing a number like 5 is V, 4 is VI.

So our task is to take a integer number and give output as roman numeral so let’s see how to do it.

## Python code for converting integer to roman numeral

``````
def int_to_roman(num):
val = [
1000, 900, 500, 400,
100, 90, 50, 40,
10, 9, 5, 4,
1
]
syb = [
"M", "CM", "D", "CD",
"C", "XC", "L", "XL",
"X", "IX", "V", "IV",
"I"
]
roman_num = ''
i = 0
while num > 0:
for _ in range(num // val[i]):
roman_num += syb[i]
num -= val[i]
i += 1
return roman_num

# Example usage:
number = int(input("Enter an integer: "))
roman_numeral = int_to_roman(number)
print(f"The Roman numeral for {number} is {roman_numeral}")
```
```

Example Ouput

``````
Enter an integer: 10
The Roman numeral for 10 is X
```
```

Above is the complete program in python to convert a integer to roman numeral so let’s see how it works step by step:

• The program has a function called `int_to_roman` to convert an integer to a Roman numeral.
• Inside the function, lists (`val` and `syb`) hold values and symbols for Roman numerals.
• An empty string (`roman_num`) is used to store the Roman numeral.
• The program iterates through values. It subtracts the largest possible value from the input and appends the corresponding symbol to `roman_num`.
• This continues until the input is zero, completing the Roman numeral.
• The function returns the Roman numeral string.

So this was for this tutorial, I hope you found it helpful and useful, do share it with your friends who might need it, Thank you reading.