A free online tool for bidirectional conversion between Unix timestamps and human-readable dates, supporting seconds/milliseconds and local/UTC time zones.
When to use
Developers and others often need to quickly convert Unix timestamps to readable dates or vice versa, but lack a simple, no-install tool that handles both directions and different units.
How to use
- 1Open the tool in a web browser.
- 2For timestamp to date: enter a Unix timestamp in the input field and select 'Seconds' or 'Milliseconds' as the unit.
- 3View the converted date in local time, UTC time, relative time, and formatted date automatically.
- 4For date to timestamp: use the date-time picker to select a date and time.
- 5View the corresponding Unix timestamp in seconds and milliseconds automatically.
- 6Click the 'Copy' button next to the current timestamp or any result to copy it to the clipboard.
Input & output
Input: a Unix timestamp (integer) or a date-time value selected via the picker. Output: for timestamp input, the equivalent date in local and UTC formats, relative time, and a formatted date; for date input, the Unix timestamp in seconds and milliseconds.
Who it's for
This tool is useful for developers, testers, and anyone who works with Unix timestamps and needs quick conversions without installing software.
FAQ
- What is a Unix timestamp?
- A Unix timestamp is the number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC.
- How do I convert a timestamp in milliseconds?
- Enter the timestamp and select the 'Milliseconds' radio button. The tool will interpret the input as milliseconds and convert accordingly.
- Does the tool support time zones?
- Yes, it shows both local time and UTC time for the converted date.
- Is my data sent to a server?
- No, all conversions are done locally in your browser, so your data remains private.