Security & Encoding
Unix Timestamp Converter
Convert a Unix timestamp into local and UTC date/time. Choose seconds or milliseconds so large millisecond values are not misread as seconds.
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How to Convert a Unix Timestamp
Step 1
Enter a Timestamp
Provide the input or options for this tool.
Step 2
Choose Seconds or Milliseconds
Run the action or review the live result.
Step 3
Review Local and UTC
Copy or download when you are ready.
Unix Timestamp Converter Features
- Seconds/milliseconds modes
- Local and UTC output
- ISO display
- Live conversion
- Clear invalid-input errors
Supported Formats
Input formats
- Text
Output formats
- Text
Supported formats
- Text
Frequently Asked Questions
How do I know seconds vs milliseconds?
Use the mode control. Millisecond timestamps are typically 13 digits for modern dates.
Are negatives supported?
Yes within the JavaScript Date range.
Is conversion live?
Yes.
Private?
Yes.
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