Unix Timestamp Converter
Convert between Unix timestamps (seconds or milliseconds) and human-readable dates.
Frequently Asked Questions
What is a Unix timestamp?
The number of seconds (or milliseconds) since January 1, 1970 00:00:00 UTC — the Unix epoch. Used widely in programming and databases.
Seconds or milliseconds?
Unix time is traditionally seconds. JavaScript Date.now() returns milliseconds. This tool auto-detects based on magnitude (10 digits = seconds, 13 = milliseconds).
What is the Year 2038 problem?
32-bit signed Unix timestamps overflow on 2038-01-19 03:14:07 UTC. Modern systems use 64-bit timestamps, which won't overflow for ~292 billion years.