Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa online for free. Supports seconds and milliseconds.
Timestamp → Date
Date → Timestamp
About this tool
The Unix Timestamp Converter helps developers work with Unix timestamps — the number of seconds (or milliseconds) elapsed since January 1, 1970 UTC. Instantly convert any Unix timestamp to a human-readable date and time in your local timezone or UTC, or convert a date back to a Unix timestamp. Supports both second-precision and millisecond-precision timestamps.
How to use Timestamp Converter
- 1Enter a timestamp: Type a Unix timestamp (in seconds or milliseconds) to convert it to a human-readable date.
- 2Or enter a date: Enter a date and time to convert it to a Unix timestamp.
- 3View both formats: See the result in UTC and your local timezone simultaneously.
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds that have elapsed since the Unix epoch — January 1, 1970 at 00:00:00 UTC.
What is the difference between seconds and milliseconds timestamps?
Unix timestamps are typically in seconds (10 digits), but JavaScript uses milliseconds (13 digits). Our tool auto-detects which format you are using.
What is the maximum Unix timestamp date?
The 32-bit Unix timestamp overflows on January 19, 2038 (the "Year 2038 problem"). 64-bit systems extend this far into the future.