What is a Unix timestamp?

A Unix timestamp is the number of seconds since January 1, 1970 00:00:00 UTC (the Unix epoch). It represents a single moment in time as a simple number, independent of timezone.

How do I convert a Unix timestamp to a date?

In JavaScript: new Date(timestamp * 1000) (multiply by 1000 because JS uses milliseconds). In Python: datetime.fromtimestamp(timestamp). Or paste it into the Timestamp Converter for instant results.

Why do some timestamps have 10 digits and others have 13?

10-digit timestamps are in seconds since epoch. 13-digit timestamps are in milliseconds. JavaScript's Date.now() returns milliseconds; most APIs and Unix tools use seconds.

How to Convert Unix Timestamps to Human-Readable Dates

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