How to convert Datetime to Unix timestamp in Dart

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    void main() {
        DateTime dateTime = DateTime.utc(2004, 8, 18, 14, 26, 41);  // Example date
        int unixTimestamp = dateTime.millisecondsSinceEpoch ~/ 1000;
        
        print('Unix Timestamp: $unixTimestamp');
        }

Output:

Unix Timestamp = 1092839201

Example only. There may be multiple ways to perform this operation.

Code Explanation

In this Dart example, a DateTime object is created for the date '2022-05-15 08:10:45' UTC. The millisecondsSinceEpoch property is used to get the time in milliseconds since the Unix epoch (January 1, 1970), and the result is divided by 1000 to convert it to seconds (the Unix timestamp format).
The Unix timestamp '1652602245' is then printed.

Convert Date to Unix timestamp in Dart

Other useful Dart date functions

Function	Description	Example
`DateTime.now()`	Returns the current date and time based on the local time zone.	`DateTime.now()` returns 2024-08-28 12:34:56
`DateTime.utc()`	Creates a `DateTime` object in UTC for the specified year, month, day, hour, minute, and second.	`DateTime.utc(2022, 5, 15, 8, 30, 45)` returns 2022-05-15 08:10:45 UTC
`DateTime.fromMillisecondsSinceEpoch()`	Creates a `DateTime` object from the number of milliseconds since January 1, 1970 (the Unix epoch).	`DateTime.fromMillisecondsSinceEpoch(1652602245000)` returns 2022-05-15 08:10:45 UTC
`DateTime.parse()`	Parses a string into a `DateTime` object.	`DateTime.parse("2022-05-15T08:10:45Z")` returns 2022-05-15 08:10:45 UTC
`millisecondsSinceEpoch`	Returns the number of milliseconds since January 1, 1970 for a `DateTime` object.	`dateTime.millisecondsSinceEpoch` returns 1652602245000
`toIso8601String()`	Converts a `DateTime` object to a string in ISO 8601 format.	`dateTime.toIso8601String()` returns 2022-05-15T08:10:45Z
`add()`	Adds a `Duration` to a `DateTime` object.	`dateTime.add(Duration(days: 5))` returns 2022-05-20 08:10:45
`subtract()`	Subtracts a `Duration` from a `DateTime` object.	`dateTime.subtract(Duration(days: 5))` returns 2022-05-10 08:10:45

Current Unix Timestamp SECONDS SINCE JAN 01 1970

Current UTC Time

2025-04-26