Seconds and milliseconds
Auto detection handles standard 10-digit Unix seconds and 13-digit millisecond timestamps.
All tools
Developer date utility
Unix Timestamp to Human Date Converter
Turn epoch seconds or milliseconds into readable dates, UTC values, ISO 8601 strings, and relative time.
Private by default. Processing happens in your browser.
- Add your inputChoose a file, paste content, or enter details.
- Choose settingsReview the useful defaults, then adjust if needed.
- Save the resultCopy or download the finished output.
Unix timestamp
Paste seconds or milliseconds. The unit can be detected automatically.
Examples: 1724918400 seconds or 1724918400000 milliseconds.
Human-readable date
Ready to read, copy, or use in code.
Enter a valid timestamp
The formatted date, UTC value, ISO string, and relative time will appear here.
Convert a date back to Unix timeOptionalClose
Choose a valid date and time.
One timestamp, every useful format
Use the output directly in logs, APIs, databases, support tickets, and debugging sessions.
Timezone-aware output
Read the same moment in browser local time, UTC, Kuala Lumpur, London, New York, and other common zones.
Developer-ready formats
Copy a readable date, UTC date, ISO 8601 string, or convert a calendar date back into Unix time.
Frequently asked questions
- What is a Unix timestamp?
- A Unix timestamp counts elapsed time from 1 January 1970 at 00:00:00 UTC. Most systems store it in seconds or milliseconds.
- How does automatic unit detection work?
- Values below 100 billion are treated as seconds. Larger values are treated as milliseconds. You can override the unit at any time.
- Does the timezone change the timestamp?
- No. A timestamp represents one fixed moment. Changing the timezone only changes how that moment is displayed.
- Can it convert dates before 1970?
- Yes. Enter a negative Unix timestamp to convert dates before the Unix epoch, within the range supported by your browser.