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Timestamp Converter
Convert Unix timestamps into readable dates.
Convert Unix timestamps in seconds or milliseconds into readable dates.
Seconds and milliseconds are detected automatically.
Convert timestamps and dates
Enter a timestamp or select a date to see its equivalent representations.
Date conversion runs locally in your browser. No values are uploaded.
About this tool
What is Timestamp Converter?
A Unix timestamp represents a specific moment as the number of seconds or milliseconds elapsed since January 1, 1970 at 00:00:00 UTC. This converter lets you move between timestamps and readable dates without sending data to a server.
Features
Built for fast developer workflows
- Convert Unix timestamps in seconds or milliseconds.
- Automatically detect common timestamp units.
- Convert local dates back into Unix timestamps.
- Display ISO 8601, UTC and local representations.
- Copy individual conversion results.
- Perform every conversion locally in the browser.
Frequently asked questions
Questions about Timestamp Converter
What is the difference between Unix seconds and milliseconds?
Unix timestamps traditionally use seconds since the Unix epoch. Some platforms, including JavaScript, commonly use milliseconds, producing a value approximately one thousand times larger.
What timezone does a Unix timestamp use?
A Unix timestamp identifies an absolute moment and is independent of timezone. The same timestamp can be displayed in UTC or converted into any local timezone.
Why is the local date different from the UTC date?
The local representation applies your browser and operating system timezone, while UTC uses the universal reference timezone.
How does the converter detect seconds or milliseconds?
Values below the usual millisecond timestamp range are treated as seconds. Larger values are interpreted as milliseconds.
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