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Unix Timestamp Converter

Enter a Unix timestamp in seconds or milliseconds, or select a date and time to convert it.

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About this tool

About Unix Timestamp Converter

The Unix Timestamp Converter turns Unix timestamps into human-readable dates and converts dates back into timestamps. A Unix timestamp counts the seconds since 1 January 1970 UTC, and it is widely used in databases, logs and APIs.

When you debug a log or an API response, a number like 1700000000 is not helpful on its own. This tool shows the matching date in UTC and your local time zone, so you can understand exactly when an event happened.

Unix timestamps count the seconds since 1 January 1970 (UTC), and they appear in logs, databases and APIs. The Timestamp Converter turns them into readable dates and turns a date back into a timestamp, so you can read machine time like a calendar.

Time zones are the most common source of confusion. A timestamp itself has no time zone, and the same value shows a different local time depending on where you view it, so always note which zone you mean.

Step by step

How to Use Unix Timestamp Converter

  1. 1
    Enter a timestamp or dateType a Unix timestamp in seconds, or choose a date and time to convert.
  2. 2
    ConvertPress the convert button to see the matching value.
  3. 3
    Compare time zonesCheck the result in UTC and in your local time zone.
  4. 4
    Copy the valueCopy the date or timestamp for your code, query or report.
Real-world use

Where Unix Timestamp Converter helps most

Reading logsTurn raw timestamps into dates you can understand.
Checking dataVerify that stored times match what the application shows.
SchedulingCreate a timestamp for a specific date and time.
Time zonesCompare how the same moment appears in local time and UTC.
Get better results

Practical tips for Unix Timestamp Converter

  • Check whether the value is in seconds (10 digits) or milliseconds (13 digits).
  • Store and exchange times in UTC, and convert for display only.
  • State the time zone whenever you share a converted date.
  • Remember daylight saving changes when you work with local time.
  • Double-check dates close to midnight.

Common mistakes to avoid

  • Mixing up seconds and milliseconds, which gives a date in 1970 or the far future.
  • Assuming a timestamp already includes a local time zone.
  • Ignoring daylight saving when you convert local times.
Benefits

Why Use Unix Timestamp Converter

Both directionsConvert timestamp to date and date to timestamp.
UTC and local timeAvoid confusion by seeing both time zones.
Helpful for debuggingMake sense of logs, tokens and API data quickly.
Runs locallyNo data is sent to a server.

Good to know. This tool runs in your browser, so the text you enter is processed on your own device. Even so, avoid pasting real passwords or secrets into any online tool. See the Privacy Policy for details.

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Questions & answers

Frequently Asked Questions

What is a Unix timestamp?
It is the number of seconds that have passed since 1 January 1970 at 00:00:00 UTC, also called the Unix epoch.
Seconds or milliseconds?
Many systems use seconds, while JavaScript often uses milliseconds. A ten-digit value is usually seconds and a thirteen-digit value milliseconds.
Why is my converted time different from what I expected?
The result may be shown in UTC while you expected your local time. Compare both values to avoid mistakes.
Do Unix timestamps include time zones?
No. A timestamp always refers to a single moment in UTC and time zones are only applied when it is displayed.
Can I convert dates before 1970?
Dates before the epoch are represented as negative timestamps, which many systems support.
Is my input stored?
No. Conversion happens in your browser and nothing is stored.