Dart DateTime millisecondsSinceEpoch
Syntax & Examples

Syntax of DateTime.millisecondsSinceEpoch

The syntax of DateTime.millisecondsSinceEpoch property is:

 int millisecondsSinceEpoch

This millisecondsSinceEpoch property of DateTime the number of milliseconds since the "Unix epoch" 1970-01-01T00:00:00Z (UTC).

Return Type

DateTime.millisecondsSinceEpoch returns value of type int.


✐ Examples

1 Get the number of milliseconds since the Unix epoch for the current DateTime

In this example,

  1. We create a DateTime object dt using the DateTime.now() constructor, which represents the current date and time.
  2. We then access the millisecondsSinceEpoch property of dt to get the number of milliseconds since the Unix epoch.
  3. We print the result to standard output.

Dart Program

void main() {
  var dt = DateTime.now();
  print(dt.millisecondsSinceEpoch);
}

Output

1714753078948
(Output varies depending on the current date and time.)

2 Get the number of milliseconds since the Unix epoch for a specific DateTime in UTC

In this example,

  1. We create a DateTime object dt using the DateTime.utc() constructor, specifying the year, month, and day.
  2. We then access the millisecondsSinceEpoch property of dt to get the number of milliseconds since the Unix epoch.
  3. We print the result to standard output.

Dart Program

void main() {
  var dt = DateTime.utc(2024, 5, 3);
  print(dt.millisecondsSinceEpoch);
}

Output

1714694400000

3 Get the number of milliseconds since the Unix epoch for a parsed DateTime

In this example,

  1. We create a DateTime object dt by parsing a date-time string '2024-05-03T10:15:30' using the DateTime.parse() method.
  2. We then access the millisecondsSinceEpoch property of dt to get the number of milliseconds since the Unix epoch.
  3. We print the result to standard output.

Dart Program

void main() {
  var dt = DateTime.parse('2024-05-03T10:15:30');
  print(dt.millisecondsSinceEpoch);
}

Output

1714711530000

Summary

In this Dart tutorial, we learned about millisecondsSinceEpoch property of DateTime: the syntax and few working examples with output and detailed explanation for each example.