Developer Tools
Unix Timestamp Converter
Convert Unix seconds, milliseconds, ISO dates, UTC, and local time formats.
Convert a value to see Unix seconds, milliseconds, ISO, UTC, and local time.
How to use
Enter a Unix timestamp or date string to get seconds, milliseconds, ISO 8601, UTC, and browser-local representations.
- Enter Unix seconds, Unix milliseconds, or a recognizable date string.
- Convert the value into several standard time representations.
- Copy the complete result or use the current browser time for testing.
Best for
- Log analysis
- JWT expiration debugging
- API date conversion
Why the result matters
- Numeric values below 100 billion in magnitude are treated as seconds; larger values are treated as milliseconds.
- Local time uses the time zone configured in the current browser and operating system.
Example inputs
- Convert 1775088000 to ISO
- Check a millisecond event time
- Convert an ISO date to Unix seconds
FAQ
How does it detect seconds or milliseconds?
Numeric values below 100 billion in magnitude are treated as seconds, while larger values are treated as milliseconds.
Which time zone is local time?
Local output uses the time zone configured in your browser and operating system.
Can it parse ISO 8601 dates?
Yes. Standard ISO date strings can be converted into Unix seconds and milliseconds.
Does current time cause a changing server page?
No. The current value is created only after you press the button in the browser.