How to convert Unix timestamp to Datetime in Swift

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    import Foundation

    // Define value for unixTimestamp 
    let unixTimestamp: TimeInterval = 1323444771
    
    // Convert Unix timestamp to Date
    let date = Date(timeIntervalSince1970: unixTimestamp)
    
    // Format the date to a readable string
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss" // Desired format: year-month-day hour:minute:second
    let formattedDate = dateFormatter.string(from: date)
    
    print("Converted Date: \(formattedDate)")

Output:

Converted Date: 2011-12-09 15:32:51

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

Code Explanation

In this snippet for converting a Unix timestamp to date in Swift, Date(timeIntervalSince1970: unixTimestamp) converts the Unix timestamp 1323444771 to a Date object. DateFormatter is used to specify the output format for the date. The format 'yyyy-MM-dd HH:mm:ss' represents the year, month, day, hour, minute, and second. The formatted date 2011-12-09 15:32:51 is then printed.

Convert Date to Unix timestamp in Swift

Other useful Swift date functions

Function	Description	Example
`Date(timeIntervalSince1970:)`	Creates a `Date` object from a Unix timestamp (seconds since 1970-01-01).	`Date(timeIntervalSince1970: 1514764800)` returns 2018-01-01 00:00:00
`timeIntervalSince1970`	Returns the number of seconds since 1970-01-01 for a given `Date` object.	`date.timeIntervalSince1970` returns 1531656645 (for July 15, 2018).
`DateFormatter.dateFormat`	Sets the format for the `DateFormatter` to interpret or display a date.	`dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"` sets the format to year-month-day hour:minute:second.
`DateFormatter.string(from:)`	Formats a `Date` object into a string using the specified format.	`dateFormatter.string(from: date)` returns 2018-01-01 00:00:00
`DateFormatter.date(from:)`	Parses a string into a `Date` object based on the specified format.	`dateFormatter.date(from: "2018-07-15 12:30:45")` parses the string to create a `Date` object.
`Date()`	Creates a `Date` object for the current date and time.	`Date()` returns the current date and time.

Current Unix Timestamp SECONDS SINCE JAN 01 1970

Current UTC Time

2025-08-20