About Unix timestamps
A Unix timestamp is the number of seconds since 1 January 1970 UTC. This converter turns timestamps (in seconds or milliseconds) into readable dates in UTC and your local time, and dates back into timestamps.
Frequently asked questions
How do I convert a timestamp on Linux?
date -d @1700000000 converts to a date, and date +%s prints the current timestamp. On macOS use date -r 1700000000.