Timestamp / Epoch Converter
Convert Unix timestamps to human-readable dates and back — with live clock, auto-detection, and multiple output formats.
Quick Timestamps
How it works: Enter a Unix timestamp (seconds, milliseconds, microseconds, or nanoseconds) and the tool automatically detects the unit and converts it to a human-readable date. Or pick a date to see its Unix timestamp. All processing is done locally in your browser — no data is sent anywhere.
Live clock
See the current Unix timestamp ticking in real time, with one-click use to convert instantly.
Bidirectional conversion
Convert timestamps to dates or pick a date to get its timestamp — both directions are fully supported.
Private & offline
All date math runs locally in your browser. Nothing is sent to a server — your data stays on your device.
Understanding Unix timestamps
Unix time is a system for tracking time by counting the number of seconds (or milliseconds) since the Unix epoch: midnight UTC on 1 January 1970. It is platform-independent, timezone-free, and the lingua franca of date storage in APIs, databases, and log files.
When you see a timestamp like 1715000000, it means 1,715,000,000 seconds have passed since the epoch. In human terms, that is 6 May 2024 at 10:13:20 UTC. Millisecond-precision timestamps add three more digits: 1715000000123 is the same moment plus 123 milliseconds.
Common use cases
Developers use this converter when debugging API responses that return timestamps, inspecting database records, reading server logs, or writing test data. It is also useful for checking certificate expiry dates, token expiration times, and scheduled job execution windows.
Security researchers and system administrators frequently need to convert epoch timestamps from intrusion detection logs, packet captures, and forensic artifacts into human-readable form. This tool handles all common precision levels — seconds, milliseconds, microseconds, and nanoseconds — automatically.
Frequently asked questions
›What is a Unix timestamp / epoch time?
Unix time (or epoch time) is the number of seconds (or milliseconds) that have elapsed since 00:00:00 UTC on 1 January 1970, not counting leap seconds. It is a standard way to represent dates and times in computing.
›How do I convert a Unix timestamp to a date?
Enter the timestamp in the input field. The tool automatically detects whether it is in seconds, milliseconds, microseconds, or nanoseconds, and shows the corresponding human-readable date in multiple formats.
›How do I convert a date to a Unix timestamp?
Switch to 'Date → Timestamp' mode and either use the date picker or type a date. The tool will output the Unix timestamp in seconds and milliseconds.
›What timestamp formats are supported?
The tool supports seconds (10 digits), milliseconds (13 digits), microseconds (16 digits), and nanoseconds (19 digits). It auto-detects the unit based on the number of digits.
›Is my data safe?
Yes. All conversion happens locally in your browser. No timestamps or dates are sent to any server.
›What is the Unix epoch?
The Unix epoch is the starting point of Unix time: 00:00:00 UTC on 1 January 1970. A timestamp of 0 represents this exact moment.
›What is the Year 2038 problem?
On 19 January 2038 at 03:14:07 UTC, 32-bit signed Unix timestamps will overflow (exceed 2,147,483,647 seconds), similar to the Y2K bug. Use 64-bit timestamps to avoid this issue.
›Can I use negative timestamps?
Yes. Negative Unix timestamps represent dates before the Unix epoch (before 1 January 1970). The tool handles them correctly.
›What is the difference between seconds and milliseconds?
Unix timestamps in seconds count whole seconds since the epoch. Milliseconds add three more digits for fractional-second precision. Most databases and APIs use milliseconds; many command-line tools use seconds.
›Can I copy results to my clipboard?
Yes. Every output card has a copy button. Click it to copy the value instantly.
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