# Find the number of digits in a number in Python

Hello coders!! In this section, we will learn how to find the number of digits in a number in a Python program.

**Here, we will discuss two methods to implement this program:**

**Iterative Method****Recursive Method**

## Find the number of digits in a number in Python using **Iterative Method**

*Let’s discuss the algorithm of this program for a better understanding of the working of this program.*

**Step1****:** Create a variable **num** that will store the integer given by the user and a **flag** variable **count **that will keep track of the number of iteration.

**Step2:** Define a **while loop** with a condition **num!=0** so that it will iterate until the test expression is evaluated to false.

**Step3:** Inside of the while loop, divide the **num** in each iteration and increment the flag variable **count** by 1 until the **num** is reduced to 0.

**Step4:** Lastly, **print** the **count** that will give us the number of digits of that given number.

**Example:**

def count_digit(num): count = 0 while num != 0: num //= 10 count += 1 return count num = int(input("Enter a number to count: ")) print("Number of digits : % d" % (count_digit(num)))

**Output1:**

Enter the number to count: 8764 Number of digits : 4

**Output2:**

Enter the number to count: 95175385462 Number of digits : 11

## Find the number of digits in a number in Python using **Recursive Method**

Here we are doing the same program using **recursion**. (*a technique using a function that calls itself until a specified condition is met*)

def count_digit(num): if num < 10: return 1 else: return 1 + count_digit(num/10) num = int(input("Enter a number to count: ")) print("Number of digits : % d" % (count_digit(num)))

**Output:**

Enter the number to count: 86759 Number of digits : 5

Hope you have enjoyed learning this article and learned how to find the number of digits of a number in Python.

**Happy Coding!!**

You can also read, Python program to find the Nth Decagonal Number

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