Time Coordination
Unix Timestamp Converter
Two-way conversion with major timezones
🔒 See this tool’s privacy notes for local processing and external service details. Site analytics are described in our privacy policy.
Current Timestamp —
Timestamp → Date
Date → Timestamp
Seconds: —
Milliseconds: —
Quick guide
What can Unix Timestamp Converter help you do?
Free Unix timestamp converter. Supports seconds, milliseconds, and global timezones (Taipei, New York, London, Tokyo).
Best for
Compare a numeric event time from an application log with clocks in Taipei, New York, London, and Tokyo. The reverse converter is useful when you need seconds and milliseconds for a date entered in the timezone of your browser.
How to use it
Enter a signed whole-number timestamp on the left, or select Use Now to fill the current second. On the right, choose a local date and time. Both conversions update automatically; the current timestamp display refreshes once per second.
How to read the result
The four city rows represent the same instant, not four different timestamps. The date input produces both seconds and milliseconds, interpreted in your browser timezone. City dates use Taiwanese formatting, and the Taipei label remains Chinese even on this English page.
Privacy and limits
Date conversion uses the device clock and built-in browser timezone formatting. The widget does not send timestamps to a time service or load a timezone library from a CDN. Avoid sharing log times that reveal private activity alongside identifying details.
Units are inferred: absolute values below 100,000,000,000 are treated as seconds, larger values as milliseconds. This can misread early millisecond timestamps or far-future seconds. Invalid numeric input clears city results; clearing the date input also clears its previous seconds and milliseconds.
Frequently Asked Questions
What is a Unix timestamp?
Seconds (or milliseconds) since 1970-01-01 00:00 UTC.
Seconds vs milliseconds?
10 digits = seconds, 13 digits = ms. Auto-detected.