Unix Timestamp Converter
Current Unix Timestamp
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Timestamp → Human Date
Human Date → Timestamp
Free Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates instantly. Supports both seconds and milliseconds, UTC and local time, with ISO 8601 output and relative time descriptions.
What Is a Unix Timestamp?
A Unix timestamp (also called Epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It's widely used in programming, databases, and APIs as a timezone-independent way to represent a point in time.
Seconds vs Milliseconds
Most systems use seconds (10 digits, e.g. 1700000000), but JavaScript and some APIs use milliseconds (13 digits, e.g. 1700000000000). The converter auto-detects the format or lets you choose manually.
100% Private
All conversions happen in your browser using JavaScript's built-in Date object. No data is sent anywhere.