Convert Unix timestamps (seconds & milliseconds) to human-readable dates, or format dates back to epoch values locally in real-time.
A Unix timestamp (also known as Epoch time or POSIX time) represents the number of seconds that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap seconds. It is the standard format used by databases, servers, and modern APIs to store and compare date and time records globally.
While computer systems prefer raw integers, human developers need readable calendars to debug database records and logs. Our free online Unix Epoch Converter lets you instantly translate timestamp numbers to local/UTC dates, and convert calendar dates back to Unix epoch seconds and milliseconds.
Seconds timestamps are 10 digits long (e.g., 1700000000), while millisecond timestamps are 13 digits long (e.g., 1700000000000).
On January 19, 2038, 32-bit signed integer timestamps will overflow, resetting to 1901. Modern systems use 64-bit integers to prevent this.
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