Unix Timestamp Converter
Convert Unix seconds or milliseconds into ISO and local dates.
How to use this tool
- Enter an integer timestamp and convert it.
- Review the live result and use Copy result when you need to share it.
How the transformation works
Values below 100 billion in magnitude are treated as seconds; larger values are milliseconds. Processing runs entirely in this browser. The page does not upload, persist, execute or remotely inspect the supplied content.
Processing rules
Values below 100 billion in magnitude are treated as seconds; larger values are milliseconds. Processing runs entirely in this browser. The page does not upload, persist, execute or remotely inspect the supplied content.
Step-by-step transformation
- Enter an integer timestamp and convert it.
- Values below 100 billion in magnitude are treated as seconds; larger values are milliseconds. Processing runs entirely in this browser. The page does not upload, persist, execute or remotely inspect the supplied content.
- Check the displayed result, then copy it if needed.
Worked example
1767225600 converts to the corresponding ISO instant in 2026.
Risk guidance
Frequently asked questions
Does this tool send my inputs anywhere?
No. The interactive calculation runs in your browser and this site does not submit tool inputs to a backend.
How should I use the result?
Check that the entered units and values match your situation, especially around dates, breaks, and rounding.
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