Unix Timestamp Converter
Convert Unix timestamps to dates and dates to timestamps. Supports seconds, milliseconds and multiple timezone formats.
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp (also called epoch time) is the number of seconds that have elapsed since January 1, 1970 at 00:00:00 UTC. It is the most common way to represent time in programming and APIs.
How do I know if a timestamp is in seconds or milliseconds?
Timestamps in seconds are typically 10 digits (e.g. 1700000000). Timestamps in milliseconds are 13 digits (e.g. 1700000000000). This tool automatically detects which format you are using.
Why is 1970 used as the epoch?
January 1, 1970 was chosen as the Unix epoch by early Unix developers in the late 1960s as a convenient reference point. It had no particular technical significance — it was simply round and recent.