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Unix timestamp converter
Convert Unix seconds or milliseconds to UTC dates and back.
WORKSPACE Processed on your device
No account neededNo file uploadsNo automatic watermark
QUICK GUIDE
How to use unix timestamp converter
Convert Unix seconds or milliseconds to UTC dates and back.
- Fill in the fields or choose a file on your device.
- Adjust the options and run the tool.
- Review the preview or result, then copy or download it.
Frequently asked questions
Do I need an account?
No. This tool is free without an account.
Is my content uploaded?
No. This tool processes content in your browser. Downloads you save remain on your device.
What are the limits?
Output uses UTC. Input dates require Z or a timezone offset. Check seconds versus milliseconds before converting.
Something did not work as expected? Let us know
Describe the issue. Do not include files, passwords or personal text. The tool will be identified automatically.