Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back — for developers and analytics.
What this tool does
Unix timestamps count seconds since January 1, 1970 UTC. Developers encounter them in APIs, databases, analytics exports, and server logs.
How to use it
- 1
Choose Unix → Date or Date → Unix mode.
- 2
Enter a timestamp or date string.
- 3
Copy the converted result.
Common pitfalls
JavaScript uses milliseconds — divide by 1000 when converting from Date.now(). Python and most APIs use seconds.
Always confirm timezone when comparing timestamps — UTC vs local time causes off-by-hours bugs.
Tips
- Use "current time" button for live debugging.
- Store timestamps in UTC; convert to local only for display.
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Frequently asked questions
What is a Unix timestamp?▼
Seconds since January 1, 1970 UTC — used in databases, APIs, and logs.
Seconds vs milliseconds?▼
Unix timestamps are usually in seconds. JavaScript Date.now() returns milliseconds.