Question 1

What is a Unix timestamp?

Accepted Answer

A Unix timestamp (also known as Epoch time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It is a widely used time representation in computing, commonly used in logging, APIs, and database storage.

Question 2

Why are some timestamps 13 digits long?

Accepted Answer

A 10-digit timestamp is in seconds, while a 13-digit timestamp is in milliseconds. JavaScript's Date.getTime() returns a millisecond-level timestamp (13 digits). Divide a 13-digit timestamp by 1000 and round down to get the 10-digit second-level timestamp.

Question 3

Will Unix timestamps overflow?

Accepted Answer

A 32-bit signed integer timestamp has a maximum value of 2,147,483,647, which corresponds to January 19, 2038, 11:14:07 UTC. This is known as the "Year 2038 Problem." However, modern 64-bit systems have already resolved this issue.

Question 4

Is this timestamp converter safe to use?

Accepted Answer

Yes. This tool runs entirely in your browser. No data is sent to any server. All conversions are performed locally, ensuring your data remains private.

Unix Timestamp Converter

Timestamp → Date

Date → Timestamp

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