Question 1

What is a Unix timestamp?

Accepted Answer

A Unix timestamp (or epoch 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.

Question 2

What's the difference between seconds and milliseconds?

Accepted Answer

Unix timestamps in seconds are 10 digits (e.g., 1716700800). In milliseconds they're 13 digits (e.g., 1716700800000). This tool auto-detects which format you're using.

Question 3

What is the Year 2038 problem?

Accepted Answer

32-bit systems store Unix time as a signed integer, which overflows on January 19, 2038. Most modern systems use 64-bit integers, which won't overflow for billions of years.

Question 4

How do I get the current Unix timestamp?

Accepted Answer

Click 'Get Current Timestamp' in the tool above. In code: JavaScript uses Date.now()/1000, Python uses time.time(), and PHP uses time().

Unix Timestamp Converter — Epoch to Human-Readable Date

About Unix Timestamps

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