What this tool does
A Unix timestamp represents the elapsed seconds or milliseconds since 1970-01-01T00:00:00Z. This tool uses browser Date for all calculations, displaying Unix Seconds, Unix Milliseconds, Local Time, UTC, and ISO 8601 simultaneously.
- Automatic mode differentiates between seconds and milliseconds in common orders of magnitude, or can be specified manually.
- datetime-local input is interpreted in the current device time zone.
- "Current time" can quickly fill in the current date and time.
How to use it
- Convert timestamp to date: Enter the number and select the unit.
- Click "Timestamp to Date" to view the device time zone, UTC and ISO.
- Date to timestamp: Select date and time.
- Click "Convert Date to Timestamp" or use "Current Time" to quickly fill in the current moment.
Common uses
- Read Unix time in logs, tokens, and databases.
- Compare second-level and millisecond-level timestamps.
- Generate a timestamp corresponding to the specified date for interface testing.
Unix Timestamp Converter Features
Converts between Unix seconds/milliseconds and dates in both directions and displays device time zone, UTC and ISO. It is suitable for daily development, debugging, data sorting and code optimization scenarios. The processing results can be directly viewed, copied or downloaded.
FAQ
What is the difference between 10-digit and 13-digit timestamps?
It is common around modern dates to have 10 digits for seconds and 13 digits for milliseconds; the number of digits is just a matter of experience and manual unit selection is more reliable.
Does datetime-local include time zone?
Not included. The value will be interpreted according to the device's current time zone.
Why is the device time zone different from UTC?
They represent the same moment in time but are displayed using different time zones; ISO 8601 results use the Z suffix of UTC.