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Convert Unix timestamps to human-readable dates and back, with support for both second and millisecond precision, a live "current timestamp" readout, and timezone switching. Built for debugging API responses, reading log files, and working with cron jobs and databases.
The conversion runs instantly in your browser with no network round-trip, so pasting production timestamps from logs carries zero privacy risk. Switch timezones to see the same moment rendered in UTC, your local zone, or any other region.
It is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC (the "epoch"). Databases, APIs, and logs use it because it is timezone-neutral and easy to compare. JavaScript and many modern systems use milliseconds instead of seconds — this tool handles both.
A rough rule: current timestamps in seconds have 10 digits, milliseconds have 13. The tool detects this automatically and also lets you force a precision.
A timestamp represents one instant, but its rendering depends on the timezone. 1700000000 is a different local clock time in Tokyo vs. New York. Always confirm which timezone a system logs in — UTC is the safe default for servers.
Yes, within the range JavaScript dates support (roughly ±275,000 years from 1970), which comfortably covers any realistic log or expiry value.
PureKit · timestamp · Free online tool — files processed locally in your browser, no upload.