Convert Unix timestamps to readable dates and dates back to epoch time, in seconds or milliseconds. Free online Unix timestamp converter for developers.
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About this tool
Convert Unix timestamps to dates and local date-time input back to timestamps.
How to use Unix Timestamp Converter
Enter a timestamp in seconds or milliseconds in Timestamp to Date.
For the reverse direction, choose a date and time in your local time zone.
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.
Explore Date & Time Tools · More practical guides
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