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How to Use Unix Timestamp Converter

Convert Unix timestamps to readable dates and dates back to epoch time, in seconds or milliseconds. Free online Unix timestamp converter for developers.

About this tool

Convert Unix timestamps to dates and local date-time input back to timestamps.

How to use Unix Timestamp Converter

  1. Enter a timestamp in seconds or milliseconds in Timestamp to Date.
  2. For the reverse direction, choose a date and time in your local time zone.
  3. Copy Seconds or Milliseconds, or use Use current time as a starting point.

Worked example

Unix timestamp 0 represents the start of 1970 in UTC; its local display depends on your time zone.

Why is the displayed local date different from UTC?

A timestamp represents an instant, while local time includes the applicable zone offset.

How do I avoid mixing units?

Confirm whether the receiving API expects seconds or milliseconds and use the matching labeled output.

Put this guide into practice

Explore Date & Time Tools · More practical guides

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