FREE TOOL · ON YOUR DEVICE
Convert a Unix timestamp to a date
Paste a Unix timestamp and turn it into a readable date in your local time, in UTC and in ISO 8601 format; it detects on its own whether it is in seconds or milliseconds. It also converts a date and time to a timestamp and shows the current value, ticking live.
- Free with an account
- Seconds and milliseconds
- ISO 8601
- Paste the timestamp
- Read the date
- Or convert a date
HOW TO USE IT
Three steps.
Paste the timestamp
For example, 1700000000. It detects seconds or milliseconds, or you choose the unit.
Read the date
In your local time, in UTC, in ISO 8601 and how long ago or ahead it is.
Or convert a date
Choose a date and time, in your time zone or in UTC, and copy the timestamp in seconds or milliseconds.
NEXT STEP
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Unix timestamp: common questions
What is a Unix timestamp?
The number of seconds since 1 January 1970 at 00:00 UTC. Many systems and languages use it in milliseconds.
How do I know if it is in seconds or milliseconds?
Today a timestamp in seconds has 10 digits and in milliseconds, 13. With “Detect”, a value of 12 digits or more is read as milliseconds.
Does it count leap seconds?
No. Unix time does not count leap seconds, just like computer clocks and JavaScript dates.
Is my text sent to a server?
No. Everything is calculated in your browser as you type; the text is not sent to Cocuyo or any third party and is not stored. You can check it in your browser’s network tools: your file is not sent.
Is it really free?
Yes. You can try it before signing up; to keep using it, we ask for a free account, with no subscription. It uses no credits and does not count toward your 30 welcome uses: it has no usage cap.
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