What is the difference between seconds and milliseconds?
A seconds timestamp has 10 digits, such as 1700000000; a milliseconds timestamp has 13 digits, such as 1700000000000. They differ by a factor of 1000.
Convert Unix timestamps between seconds and milliseconds, with timezone support and one-click copy
Live current time with seconds/milliseconds switching and copy
Enter a seconds or milliseconds timestamp, choose a timezone, and get a formatted date
Choose a timezone, enter a date, and get seconds/milliseconds timestamps
A seconds timestamp has 10 digits, such as 1700000000; a milliseconds timestamp has 13 digits, such as 1700000000000. They differ by a factor of 1000.
A timestamp is the same absolute moment, but each timezone has its own local time. The displayed date and time change with the timezone.
The same date text represents different absolute moments in different timezones. The timezone determines the exact Unix timestamp.
YYYY-MM-DD HH:MM:SS is recommended. Common slash-separated dates and ISO 8601 with an offset are also supported.
The browser date range typically supports years from 1970 to 9999. Values outside that range show an error.
No. Timestamp parsing, timezone conversion, and formatting all run locally in your browser.