10 or 13 digits?
Ten digits means seconds; thirteen means milliseconds.
Unix Timestamp Converter
Turn a Unix timestamp from a log, database or API into a readable date, or get the timestamp for any date and time. Seconds and milliseconds are detected automatically.
- 100% free
- No sign-up
- Runs in your browser
Current Unix timestamp
Timestamp to date
Date to timestamp
How to use
How to use the Unix Timestamp Converter
- Paste a timestamp to see it as a date in local time, UTC and ISO format.
- Or pick a date and time to get its timestamp.
- Choose local time or UTC for the date you enter.
- Copy any value with one click.
Private by design. Conversions use your device's clock and time zone settings. Nothing is uploaded.
About this tool
What is a Unix timestamp?
A Unix timestamp counts the seconds since 00:00:00 UTC on 1 January 1970, known as the Unix epoch. Because it is a single number with no time zone, it is the most common way computers store and exchange moments in time.
JavaScript and many APIs use milliseconds instead of seconds, which gives a 13-digit number rather than 10 digits. This converter detects which one you pasted. Remember that a timestamp is always UTC; it only becomes a local time when it is displayed for a particular time zone.
Good to know
Timestamp tips
Store in UTC
Save timestamps in UTC and convert to local time only for display.
Watch daylight saving
Local times can repeat or skip during clock changes; timestamps do not.
The 2038 problem
Old 32-bit systems cannot store timestamps after January 2038.
FAQ
Unix Timestamp Converter FAQs
How do I convert a timestamp in Excel?
Use =(A1/86400)+DATE(1970,1,1) for seconds, then format the cell as a date. The result is UTC.
Is the timestamp in my time zone?
No. Unix timestamps are always UTC. This tool shows both UTC and your local time.
Can timestamps be negative?
Yes. Negative values are dates before 1970.
Does it handle milliseconds?
Yes. Large numbers are automatically read as milliseconds.
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