Cocoa Core Data Timestamp Converter

Apple Cocoa Core Data timestamp to human-readable date

Core Data is a data storage framework to manage objects in iOS and OS X applications. Core Data is part of the Cocoa API. These timestamps are sometimes labeled 'Mac absolute time'.

A Core Data timestamp is the number of seconds (or nanoseconds) since midnight, January 1, 2001, GMT (see CFAbsoluteTime).
The difference between a Core Data timestamp and a Unix timestamp (seconds since 1/1/1970) is 978307200 seconds.

The current Core Data timestamp is 583062468 or in nanoseconds: 583062468000000000

Enter your Core Data timestamp below (seconds or nanoseconds):


To convert seconds since 1904 see: Mac Timestamp