Unix Timestamp Converter
Convert Unix Epoch timestamps to and from human-readable dates.
Your files and data are processed locally and never leave your device.
Parsed Human Date & Time
What is Unix Timestamp Converter?
Unix Timestamp Converter translates Unix epoch timestamps (seconds and milliseconds since January 1, 1970 UTC) into human-readable date and time formats across global timezones. It also converts calendar dates back to Unix timestamps in real time.
Unlike legacy online utilities that upload sensitive media and documents to remote cloud storage, Shadow Toolkit executes this entire operation directly within your browser's local runtime. Your raw data never crosses the network.
Key Capabilities
- Bidirectional conversion: Epoch Timestamp to Date and Date to Epoch Timestamp
- Supports both Seconds (10 digits) and Milliseconds (13 digits) formats
- Displays relative time (e.g., '3 hours ago', 'in 2 days')
- Shows time across UTC, Local time, and standard ISO 8601 / RFC 2822 strings
- 100% private in-browser conversion with zero cloud logging
Common Use Cases
How to use Unix Timestamp Converter
Enter Timestamp or Date
Paste an epoch number (e.g., 1700000000) or pick a calendar date.
View Timezone Conversions
Inspect the time in UTC, your local timezone, and ISO 8601 string.
Copy Result
Click to copy the timestamp or formatted date string.
Copy Formatted Values
Review the converted unit values and copy the exact numerical results or formula breakdown for your documentation.
Frequently Asked Questions
Unix epoch time is the number of seconds that have elapsed since 00:00:00 UTC on Thursday, 1 January 1970, not counting leap seconds.
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