How to find String Length in Dart?

Dart – String Length

To find length of a given string in Dart, you can use length property of String class.

The syntax to get length of string is

String.length

String.length is a read-only property of String object, that returns an integer specifying the number of characters in the string.

In this example, we will take a string str, and find its length using String.length property.

Dart Program

void main(){
	
	String str = 'HelloTutorialKart';
	
	//get string length
	int len = str.length;
	
	print(len);
}

Output

The length of the the given string in detailed format.

H   e   l   l   o   T   u   t   o   r   i   a   l   K   a   r   t
 1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17

In this example, we will find the length of an empty string. Of course, it would be zero. But let us verify programmatically.

Dart Program

void main(){
	
	String str = '';
	
	//get string length
	int len = str.length;
	
	print(len);
}

Output

In this Dart Tutorial, we learned how to find the length of a String using the property String.length.