Unix Timestamp Converter
Paste an epoch timestamp to see the exact date in UTC and your local time, or turn any date into seconds and milliseconds. Everything runs in your browser.
Free Runs locally No signup
Current timestamp—seconds
—milliseconds
Timestamp → Date
Paste a timestamp to see the date.
Date → Timestamp
Auto-detect treats 10-digit values as seconds and 13-digit values as milliseconds.
How to use it
1
Paste a timestamp
Enter a Unix timestamp in seconds or milliseconds and let auto-detection handle the unit.
2
Read the date
The tool shows UTC, local time, ISO 8601 and a relative description.
3
Convert a date back
Pick a date in the second panel to get the matching epoch value.
Why use this tool
Auto-detects seconds and milliseconds
Ten-digit values are treated as seconds and thirteen-digit values as milliseconds.
UTC, local time and relative
See the same moment in several formats without doing mental math.
Live current time
The current epoch clock updates every second and can be copied with one click.
Frequently asked questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds since 1 January 1970 at 00:00 UTC, ignoring leap seconds.
Seconds or milliseconds?
Ten-digit values are seconds and thirteen-digit values are milliseconds. Auto-detection handles both, and you can force a unit.
Why does my date look different?
Timestamps are absolute moments. The display depends on the time zone: UTC is shown alongside your local time.
What is the 2038 problem?
32-bit signed timestamps overflow in January 2038. This tool uses JavaScript numbers, which stay safe far beyond that date.
Does it support negative timestamps?
Yes. Negative values represent dates before 1970 and are converted normally.
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