Convert a date to a Unix timestamp
A local clock reading does not identify an instant until a timezone is supplied. This guide shows how the converter applies the selected IANA timezone and handles daylight-saving transitions.
Unix Timestamp
- Date & Time (UTC)
- 2000-01-01T00:00:00
- Unix Timestamp
- 946684800 s / 946684800000 ms
How daylight-saving gaps and repeated times work
Spring-forward clock times that never occur are rejected; the converter does not silently shift them.
Fall-back clock times that occur twice require an explicit earlier or later choice. The default is earlier.
New York spring-forward gap
- Date & Time
- 2026-03-08T02:30 · America/New_York
- Unix Timestamp
- Rejected: 02:30 does not exist on this date
New York fall-back repeated time
2026-11-01T01:30 · America/New_York
- Earlier occurrence
- 1793511000 s / 1793511000000 ms
- 2026-11-01T05:30:00.000Z · UTC-04:00
- Later occurrence
- 1793514600 s / 1793514600000 ms
- 2026-11-01T06:30:00.000Z · UTC-05:00
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, 00:00:00 UTC. It's a standard way to represent time in computer systems and is commonly used in programming and databases.
- How do I convert a date to a Unix timestamp?
- Select or enter a date and time using the date picker, choose your timezone, and click 'Convert to Timestamp'. The tool will display the Unix timestamp (in seconds) for that date and time.
- What timezone does the Unix timestamp use?
- Unix timestamps are always in UTC (Coordinated Universal Time). However, our converter allows you to view and input dates in any timezone. The conversion automatically handles timezone differences.