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Unix Timestamp Converter

Convert Unix timestamps to dates and times—and vice versa—in any time zone.

Current timestamp: —

Timestamp → date

Date → timestamp

Processed on your device. Nothing you type is sent anywhere.

How to use: Unix Timestamp Converter

  1. Paste the timestamp — the unit (seconds or milliseconds) is detected by the number of digits.
  2. Choose a time zone to see the local date and time.
  3. To convert the other way, enter a date and time, then copy the timestamp.

About this tool

A Unix timestamp counts the seconds since January 1, 1970, at 00:00 UTC. It has no time zone: the same number represents the same moment everywhere in the world; only the displayed time changes. JavaScript and Java typically use milliseconds (13 digits), while most databases and PHP use seconds (10 digits).

The browser's built-in time zone database handles conversions and includes historical rules.

Frequently asked questions

How can I tell whether a timestamp is in seconds or milliseconds?

Current timestamps have 10 digits in seconds and 13 in milliseconds. The tool detects the unit automatically, but you can also select it manually.

What is the Year 2038 problem?

Systems that store timestamps as signed 32-bit integers will overflow on January 19, 2038. Modern systems use 64-bit integers and don't have this limit.

Is it really free? Is there a daily limit?

It's free with no daily limits. Processing happens on your device, so there's no per-use cost and no need to limit you.

Does it work on phones?

Yes. The site works in any modern browser on Android, iPhone, Windows, Mac, and Linux—no installation needed.

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