Unix timestamp converter
Convert Unix seconds, milliseconds or an ISO date into UTC time.
Your results
Unix timestamp converter
Interpret an epoch timestamp from a log or API response, or convert an ISO date into Unix time. Select seconds or milliseconds to match the source. Compare the UTC result with any local timezone display in your application.
How to use this tool
- Enter the details above.
- Review the settings and create your result.
- Download and check the output before using it.
Available settings
- Timestamp or ISO date
- Input format
Output and limitations
Convert Unix seconds, milliseconds or an ISO date into UTC time.
ISO input must include Z or an explicit timezone offset. Results include UTC, Unix seconds and milliseconds. Invalid or out-of-range dates are rejected.
Where are my files processed?
Selected files are processed in your browser. Importing a URL uses the download service to retrieve the remote file.
What if processing fails?
Check the supported formats and file limits, then try a smaller file. Keep an original copy. A clear error message will explain an unsupported input or an unavailable processing service.