Timestamp Converter
Convert Unix/epoch timestamps to human-readable dates and dates to timestamps. Auto-detects seconds vs milliseconds. 100% client-side — nothing leaves your browser.
Current Unix timestamp
UTC
Local
Timestamp to Date
Enter a Unix timestamp (seconds or milliseconds)...
Date to Timestamp
Fill in a date to get the Unix timestamp...
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Frequently Asked Questions
A Unix timestamp counts the number of seconds since January 1, 1970, 00:00:00 UTC. It's used universally in programming and system logs because it's timezone-independent, compact, and easy to compare. Most programming languages have built-in functions to work with Unix timestamps.
Timestamps in seconds are typically 10 digits (until November 2286). Millisecond timestamps are 13 digits. If you see a 13-digit number, it's almost certainly milliseconds. This tool auto-detects the format. JavaScript's
Date.now() returns milliseconds, while Python's time.time() returns seconds (with decimals).Timestamps are critical for incident response and forensics. Log files use various timestamp formats that need to be correlated. JWT tokens use Unix timestamps for expiration. Malware often uses timestamps for anti-analysis techniques. Being able to quickly convert between formats is essential for any security analyst.