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Convert time
Result
This converter runs locally in your browser and does not send values to a ToolForge Online server.
What is a Unix timestamp?
A Unix timestamp is a number that represents a moment in time counted from January 1, 1970 at 00:00:00 UTC.
Seconds vs milliseconds
Many systems use seconds with 10 digits. Browser JavaScript dates usually use milliseconds with 13 digits.
When to use this converter
Use it when checking logs, scheduled events, exported data or date values that need to be compared across UTC and local time.
Local browser processing
The conversion happens on your device with browser JavaScript. Values are not sent to a ToolForge Online server.
Practical guidance
What this tool does
Timestamp Converter converts Unix timestamps to readable dates and converts date inputs back to timestamp values.
When to use it
Use it when reading logs, debugging API data, checking scheduled events or comparing UTC and local time values.
Example use
For example, paste a 10-digit or 13-digit timestamp from a log and review the corresponding UTC and local date.
How it works
The tool treats 10-digit values as seconds and 13-digit values as milliseconds, then uses browser date functions.
Limitations
The output depends on browser and device timezone settings and does not correct inaccurate system clocks or business-specific timezone rules.
Privacy note
The tool converts values locally in your browser and does not send them to ToolForge Online.
FAQ
What is the difference between 10-digit and 13-digit timestamps?
A 10-digit Unix timestamp counts seconds since 1970-01-01 UTC, while a 13-digit value counts milliseconds. The tool detects the length and interprets the value accordingly.
Why do UTC and my local time differ?
A timestamp itself has no timezone: it is an absolute moment. The tool shows that moment both in UTC and converted to your device's timezone, so an offset between them is expected.
Can I convert a date back to a timestamp?
Yes. Enter a date and time, and the tool returns the matching Unix timestamp, which is useful for building test data or comparing values in logs and APIs.
Are the values sent to a server?
No. Conversion uses your browser's date functions on your device, and the timestamps you enter are not uploaded to a ToolForge Online server.