Unix Timestamp / Epoch Day Calculator
Choose a date to see its Unix day number, Unix timestamp in seconds, and how many days it is from today.
Unix Timestamp / Epoch Day Calculator
Convert a calendar date into its Unix day number and timestamp in seconds, and see days from today.
Unix time counts days (and seconds) elapsed since January 1, 1970 (the Unix epoch), a standard used throughout computing. This calculator converts a chosen date into its Unix day number and timestamp in seconds, and shows how many days it falls from today.
Example
- With the default values shown above, this calculator returns: Unix Day Number (Days Since Jan 1, 1970) ≈ 0; Unix Timestamp (Seconds) ≈ 0; Days From Today ≈ -20,707.
Frequently Asked Questions
What is the Unix epoch?
The Unix epoch is midnight UTC on January 1, 1970 — the reference point from which Unix time counts elapsed days and seconds, used throughout computing systems.
Why would I need this?
Developers and system administrators often need to convert between human-readable dates and Unix timestamps when working with logs, databases, or APIs that store time as a Unix value.