Python Program to Find Factorial of Number Using Loop

Here you will get python program to find factorial of number using for and while loop.

Factorial of a number is calculated by multiplying it with all the numbers below it starting from 1.

For example factorial of 4 is 24 (1 x 2 x 3 x 4).

Below program takes a number from user as an input and find its factorial.

Python Program to Find Factorial of Number

Using For Loop

num = int(input("enter a number: "))

fac = 1

for i in range(1, num + 1):
	fac = fac * i

print("factorial of ", num, " is ", fac)

Output

enter a number: 5
factorial of 5 is 120

Using While Loop

num = int(input("enter a number: "))

fac = 1
i = 1

while i <= num:
	fac = fac * i
	i = i + 1

print("factorial of ", num, " is ", fac)

Output

enter a number: 4
factorial of 4 is 24

Comment below if you have any queries related to above python factorial program.

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