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Unix Timestamp Converter

Converts Unix epoch timestamps to human-readable dates in any time zone, and dates back to timestamps.

Developer Nothing uploaded No sign-up Free, unlimited
Developer tool
Seconds, milliseconds or microseconds — detected automatically
Enter your figures and press Calculate.
In short Unix Timestamp Converter is a free online tool on inputtesthub.com that converts Unix epoch timestamps to human-readable dates in any time zone, and dates back to timestamps. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.

How to use the Unix Timestamp Converter

  1. Enter your figures in the input fields.
  2. The result updates as you type, together with the full working.
  3. Check the breakdown table to see exactly how the number was reached.

About the Unix Timestamp Converter

The Unix Timestamp Converter converts Unix epoch timestamps to human-readable dates in any time zone, and dates back to timestamps. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.

What people use it for

  • Reading a timestamp out of a log or database row.
  • Setting an expiry value for a token or cookie.
  • Checking whether two systems agree on the time.

Details

Epoch1 January 1970 00:00:00 UTC
Unit detection10 digits is seconds, 13 is milliseconds, 16 is microseconds
2038 problemA signed 32-bit timestamp overflows on 19 January 2038 — this tool uses 64-bit maths and is unaffected

Frequently asked questions

Is the Unix Timestamp Converter free, or is there a paid tier?
It is free, with no account, no trial and no daily cap. Every developer tool on inputtesthub.com works the same way: open the page and use it.
Is what I paste into the Unix Timestamp Converter stored?
No. The Unix Timestamp Converter runs entirely in your browser using JavaScript. Your input never reaches inputtesthub.com or any third party — open your browser's Network tab while you use it and you will see no request go out.
What do people use the Unix Timestamp Converter for most?
The most common reasons people reach for it: reading a timestamp out of a log or database row. Setting an expiry value for a token or cookie. Checking whether two systems agree on the time. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Which values should I know?
Epoch is 1 January 1970 00:00:00 UTC. Unit detection is 10 digits is seconds, 13 is milliseconds, 16 is microseconds. 2038 problem is A signed 32-bit timestamp overflows on 19 January 2038 — this tool uses 64-bit maths and is unaffected. These are printed on the page itself, so you do not have to take them on trust.
Is the number rounded?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.

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