About Unix Timestamps
A Unix timestamp (also called Epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970, at 00:00:00 UTC. It is a compact, timezone-independent way to represent a point in time, making it the standard for databases, APIs, and log files.
This tool accepts timestamps in seconds or milliseconds and converts them to multiple human-readable formats, including ISO 8601, UTC, local time, and relative ("3 days ago").