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Unix Timestamp Converter

Convert epoch time to a date, and back again.

  • 100% Free
  • No Sign Up
  • Works in Your Browser

Timestamp converter

Convert Unix epoch time to dates

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How to use the timestamp converter

Three steps, all in your browser.

  1. 1

    Enter a time

    Paste a Unix timestamp, or pick a date to convert.

  2. 2

    Check the options

    Adjust the options if you need to. The conversion updates instantly.

  3. 3

    Copy the result

    Copy the output in one click. Nothing is saved or sent anywhere.

Unix Timestamp Converter: what to know

The timestamp converter turns a Unix timestamp into a readable date and time, in UTC, your own time zone or any other, and turns a date back into a timestamp. The unit is detected from the size of the number: seconds (10 digits for current dates), milliseconds (13), microseconds or nanoseconds. Results are shown as ISO 8601, RFC 2822 and relative time, such as '3 hours ago'.

Unix time counts the seconds since 00:00:00 UTC on 1 January 1970, ignoring leap seconds. Because it's a single number that's the same everywhere at a given instant, it's the standard way to store times in databases, logs, JWTs (the exp and iat claims) and APIs, leaving time zones to display time. JavaScript's Date.now() and Java's System.currentTimeMillis() use milliseconds instead, a common source of off-by-1000 bugs.

ISO 8601 strings such as 2026-10-02T14:30:00Z are the text equivalent: the Z means UTC, while an offset such as +02:00 records the local time zone. Use ISO 8601 or Unix time in APIs, never ambiguous formats like 02/10/2026.

Popular uses

  • Reading timestamps in logs, databases and API responses
  • Checking a JWT's exp claim or a cache expiry
  • Creating a timestamp for a test or a SQL query
  • Converting event times between UTC and local time

Tips for the best result

  • A date in January 1970 usually means seconds were read as milliseconds; a date tens of thousands of years ahead means the opposite.
  • Store times in UTC and convert to the user's time zone only when displaying them.
  • Signed 32-bit time runs out on 19 January 2038; make sure stored timestamps use 64-bit integers.

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Frequently asked questions