Unix Timestamp Converter

The number of seconds since 00:00:00 UTC on January 1, 1970 — the Unix epoch. Some systems use milliseconds instead; we auto-detect based on digit count.

JavaScript uses milliseconds (13 digits), while most Unix tools and databases use seconds (10 digits). Both are shown so you can copy whichever your language expects.

On January 19, 2038, at 03:14:07 UTC, the 32-bit signed integer used to store seconds since epoch will overflow. Any system still using int32 timestamps will misbehave — most modern systems use 64-bit and are safe until year 292 billion.