Dart num toStringAsFixed()
Syntax & Examples

num.toStringAsFixed() method

The `toStringAsFixed` method in Dart returns a decimal-point string representation of this number.

Syntax of num.toStringAsFixed()

The syntax of num.toStringAsFixed() method is:

 String toStringAsFixed(int fractionDigits)

This toStringAsFixed() method of num returns a decimal-point string-representation of this.

Parameters

ParameterOptional/RequiredDescription
fractionDigitsrequiredThe number of digits to display after the decimal point.

Return Type

num.toStringAsFixed() returns value of type String.


✐ Examples

1 Formatting a number with 2 decimal places

In this example,

  1. We create a num variable number with the value 123.456789.
  2. We use the toStringAsFixed method with argument 2 to format the number with 2 decimal places.
  3. We then print the formatted number to standard output.

Dart Program

void main() {
  num number = 123.456789;
  String result = number.toStringAsFixed(2);
  print('Formatted number: $result');
}

Output

Formatted number: 123.46

2 Formatting a number with 4 decimal places

In this example,

  1. We create a num variable number with the value 987.654321.
  2. We use the toStringAsFixed method with argument 4 to format the number with 4 decimal places.
  3. We then print the formatted number to standard output.

Dart Program

void main() {
  num number = 987.654321;
  String result = number.toStringAsFixed(4);
  print('Formatted number: $result');
}

Output

Formatted number: 987.6543

Summary

In this Dart tutorial, we learned about toStringAsFixed() method of num: the syntax and few working examples with output and detailed explanation for each example.