In this Python tutorial, we will learn how to find the length of a string using len() builtin function.

Python – String Length

To find the length of a string in Python, use the function len() and pass the string as argument.

len() function returns an integer value representing the number of characters in the string.

Syntax

The syntax of len() function is

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 len(string)

Examples

1. Find length of a string

In the following example, we take a string value and find its length. We print the length to the console.

Python Program

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str = "Welcome to TutorialKart."
length = len(str)
print("Length of the string is :", length)

Output

Length of the string is : 24

2. Length of empty string

Let us take an empty string and find out its length. Of course it has to be zero.

Python Program

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str = ""
length = len(str)
print("Length of the string is :", length)

Output

Length of the string is : 0

Conclusion

In this Python Tutorial, we learned how to find the length of a string in Python using len() function.