Current Unix time: [click to copy]
Milliseconds: [click to copy]
Seconds: [click to copy]
What is a Unix timestamp?
A Unix timestamp (also called epoch time) is the number of seconds — or milliseconds — elapsed since January 1, 1970, 00:00:00 UTC. It's the universal language of time in software: databases store it, APIs return it, logs use it.
Seconds vs milliseconds
Most Unix timestamps are in seconds (10 digits, e.g. 1735689600), but JavaScript, Java, and many APIs use milliseconds (13 digits, e.g. 1735689600000). The converter above handles both automatically.
Common reference points
0— January 1, 1970 00:00:00 UTC (the Unix epoch)1000000000— September 9, 2001 01:46:40 UTC1735689600— January 1, 2025 00:00:00 UTC2147483647— January 19, 2038 (the Y2K38 problem boundary)