What is the difference between seconds and milliseconds timestamps?

A Unix timestamp in seconds is typically 10 digits (e.g., 1700000000). In milliseconds, it is 13 digits (e.g., 1700000000000). JavaScript uses milliseconds, while most Unix systems and APIs use seconds.

What is the Year 2038 problem?

32-bit systems store Unix timestamps as a signed 32-bit integer, which will overflow on January 19, 2038. Most modern systems use 64-bit integers, which can represent dates billions of years into the future.

How do I get the current Unix timestamp in code?

In JavaScript: Date.now() or Math.floor(Date.now()/1000). In Python: import time; int(time.time()). In PHP: time(). In Bash: date +%s.

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds.

Current Unix Timestamp

1774547339

Timestamp → Date

Date → Timestamp

What Is a Unix Timestamp?

A Unix timestamp is a way to track time as a running total of seconds since the Unix Epoch (January 1, 1970, 00:00:00 UTC). It is used in virtually every programming language, database, and API to store and compare dates in a timezone-independent way.

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