Unix Timestamp Converter
Convert bidirectionally between Unix timestamps and dates (Local/UTC) in real time. All processing happens in your browser.
πView timestamp specs and the Year 2038 problem
What Is a Unix Timestamp (Epoch Time)?
A numeric value representing the number of seconds elapsed since January 1, 1970 00:00:00 UTC (the Unix epoch). Because it is a timezone-agnostic absolute number, it is widely used for time synchronization across international systems and for storing datetime values in databases. (Note: leap seconds are typically not factored in.)
Seconds (10 digits) vs. Milliseconds (13 digits)
The most common source of bugs when integrating frontend and backend systems.
- β’10 digits (Seconds): Standard in PHP's time(), Python, MySQL, and many backend systems and legacy infrastructure.
- β’13 digits (Milliseconds): Standard in JavaScript's Date.now() and Java. If you pass a 10-digit second value to a frontend expecting milliseconds, the date will be interpreted as around the year 1970.
The Year 2038 Problem (Y2K38)
Legacy systems that store Unix timestamps as 32-bit signed integers will overflow on January 19, 2038 at 03:14:07 UTC, when the value exceeds the maximum (2147483647).
When the limit is exceeded, the value wraps around to a negative number (representing 1901), causing system failures and malfunctions. To prevent this, modern system designs and database environments (e.g., MySQL's TIMESTAMP type) are strongly encouraged to migrate to 64-bit integers.
Current Time (Live)
Timestamp β Date
Date β Timestamp
About Security
All processing is performed entirely in your browser. Timestamps and dates you enter are never sent to any external server. Use with confidence.