Unix Timestamp Converter
Developer ToolsConvert Unix timestamps to dates
Current Unix Timestamp
0seconds
|
0milliseconds
Timestamp → Human Date
Unit
Unix Timestamp
Timezone
Human Date → Timestamp
Date & Time
Batch Convert
Unit
Timestamps (one per line)
Date Difference Calculator
Start Date
End Date
About Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds, multiple formats, and timezone conversion.
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Frequently Asked Questions
What is a Unix timestamp (epoch time)?
A Unix timestamp, also called epoch time or POSIX time, counts the seconds since January 1, 1970 at 00:00:00 UTC. It is the standard way to represent time in programming languages, databases, and APIs because it is timezone-independent and easy to compare mathematically.
How do I convert epoch time to a human-readable date?
Paste your Unix timestamp (10-digit seconds or 13-digit milliseconds) into the input field. The tool instantly converts it to ISO 8601, UTC, local time, and relative time formats. This is useful for reading timestamps from server logs, API responses, and database records.
What is the difference between seconds and milliseconds epoch timestamps?
A seconds timestamp is 10 digits (e.g. 1700000000) and a milliseconds timestamp is 13 digits (e.g. 1700000000000). JavaScript Date.now() and Java System.currentTimeMillis() return milliseconds, while PHP time() and Python time.time() return seconds. This tool handles both automatically.
Is my data safe when converting timestamps?
Yes. All conversions run entirely in your browser. No timestamps or dates are sent to any server. The tool uses your local JavaScript Date object for all calculations.
What date and time output formats does this converter support?
The tool outputs four formats simultaneously: ISO 8601 (e.g. 2024-01-15T09:30:00.000Z), UTC string, your local timezone format, and a relative description like "2 hours ago." You can also convert from any date picker selection back to a Unix timestamp in seconds and milliseconds.
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