Unix Timestamp Converter
Convert Unix timestamps to dates and vice versa.
Timestamp → Date
Date → Timestamp
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How to use Unix Timestamp Converter
- 1Enter a Unix timestamp or select a date/time
- 2View the conversion between formats instantly
- 3Copy the result you need
Pro tip: Unix timestamps are seconds since January 1, 1970 — used in most programming languages and APIs.
What is a Unix Timestamp Converter?
A Unix timestamp (also called Epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC. Our converter transforms Unix timestamps into human-readable dates and vice versa. It supports seconds and milliseconds, and displays results in your local timezone as well as UTC. Essential for developers working with APIs, databases, and logging systems.
When to Use a Timestamp Converter
- Debugging API responses that return dates as Unix timestamps
- Converting database timestamp columns to readable dates
- Setting cookie expiration times or JWT token expiry
- Analyzing server logs and error timestamps
- Calculating time differences between events in epoch format
Frequently Asked Questions
Why do systems use Unix timestamps?
Unix timestamps are timezone-independent (always UTC), compact (one integer), easy to compare and sort, and work identically across all programming languages and databases. They eliminate timezone confusion in distributed systems.
What's the difference between seconds and milliseconds?
Unix timestamps in seconds are 10 digits (e.g., 1700000000). Millisecond timestamps are 13 digits (e.g., 1700000000000). JavaScript's Date.now() returns milliseconds; most APIs and databases use seconds.
What is the Year 2038 problem?
32-bit systems store Unix time as a signed integer that maxes out on January 19, 2038 at 03:14:07 UTC. After this, the counter overflows. Most modern systems use 64-bit integers, which extend to billions of years.
How do I get the current Unix timestamp?
In JavaScript: Math.floor(Date.now()/1000). In Python: import time; int(time.time()). In Bash: date +%s. In PHP: time(). Our tool also shows the current timestamp in real-time.