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Unix Timestamp Converter

Convert between Unix Epoch time and human-readable dates.

Current Unix Time (Seconds): Loading...

What is a Unix Timestamp?

A Unix timestamp (also known as Epoch time or POSIX time) is a system for describing a point in time. It is defined as the number of seconds that have elapsed since the Unix Epochβ€”January 1, 1970, at 00:00:00 UTCβ€”minus leap seconds.

Because it is represented as a single integer, it is incredibly easy for computer systems, databases, and APIs to store, compare, and sort dates without worrying about complex time zones, daylight saving time adjustments, or differing string formats.

How to Convert Epoch to Human-Readable Date?

  1. Select the Timestamp to Date tab.
  2. Paste your Unix timestamp into the input field.
  3. If your timestamp is 13 digits long, it is likely in milliseconds (commonly used in JavaScript). Make sure to select "Milliseconds" from the dropdown.
  4. Click convert to instantly see both the global UTC time and your localized time.

Frequently Asked Questions (FAQ)

What is the Year 2038 Problem (Y2K38)?

On January 19, 2038, the Unix timestamp will exceed the maximum value that can be stored in a signed 32-bit integer (2,147,483,647 seconds). Systems that still use 32-bit integers to store time will experience integer overflow and interpret the date incorrectly as December 13, 1901. Most modern 64-bit operating systems have already solved this issue.

What is the difference between Seconds and Milliseconds in Unix time?

Traditional Unix systems (like Linux and PHP) measure time in seconds since the Epoch (a 10-digit number currently). Modern web technologies, specifically JavaScript and Java, measure time in milliseconds (a 13-digit number). Our converter handles both seamlessly.

Does Unix time account for leap seconds?

No. By definition, Unix time does not count leap seconds. Every day is treated as containing exactly 86,400 seconds. When a leap second is added to real global time, Unix time simply repeats the same second twice to stay in sync.