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📅 Unix Timestamp Converter — Epoch to Date and Back

Paste a Unix timestamp or a date and see both directions at once: epoch seconds, milliseconds, UTC, and your local time. Nothing is uploaded.

Date & Time Free · no sign-up Added 2026-10-04
Input
Seconds are about 10 digits; milliseconds are about 13 digits.
Use a local datetime-local value such as 2024-06-01T15:30.
Result
Converted value 

  




  Breakdown
  



        

      

    

    

      
      Private by design. This tool runs entirely in your browser — nothing you enter or add is uploaded to any server.
    

  


  

    
How it works

    
    
      
  1. Paste a Unix timestamp and choose seconds, milliseconds, or automatic detection.
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  2. Press Timestamp to date to see UTC and your local timezone side by side.
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  3. Or enter a local date and time and press Date to timestamp to get epoch seconds and milliseconds.
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Examples

    
    
      
  • 1717200000 is 1 June 2024 at 00:00 UTC.
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  • A 13-digit value such as 1717200000000 is the same moment in milliseconds.
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  • Scheduling jobs often need the epoch seconds for a local meeting time.
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Frequently asked questions

    

  

    What is a Unix timestamp?
    
It is the number of seconds since 1 January 1970 00:00:00 UTC, ignoring leap seconds. Millisecond timestamps multiply that count by 1,000.

  

  

    Does this account for my timezone?
    
Yes. UTC is shown separately from the timezone reported by your browser, so local civil time and UTC stay distinct.

  

  

    Is the date I enter uploaded?
    
No. Conversion uses the built-in Date object in your browser and never sends the value to a server.

  



  


  

    

      
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