Unix Timestamp Converter
Use this Unix timestamp converter to translate epoch time to readable dates and back. Live clock with seconds and milliseconds support.
About Unix Timestamp Converter
The Unix Timestamp Converter lets you translate between Unix epoch timestamps and human-readable dates, and back again. A live-updating clock at the top of the page displays the current Unix timestamp in both seconds and milliseconds, giving you an instant reference you can copy with one click.
Timestamp to Date and Back
Enter a numeric timestamp - in seconds or milliseconds - and the tool instantly shows the corresponding date and time in both UTC and your local timezone. Going the other direction, pick a date and time using the input fields and the tool produces the matching Unix timestamp, ready to paste into your code, database query, or API request.
Where Timestamps Appear
Unix timestamps are the backbone of time representation in computing. They appear in server logs, JWT tokens, database records, API responses, cron schedules, and countless configuration files. Being able to quickly translate between a raw number and a human-readable date is one of the most common micro-tasks developers face.
Auto-Detection and Timezone Display
The tool automatically detects whether a given number is likely a seconds-based (10-digit) or milliseconds-based (13-digit) timestamp, though you can override this with an explicit toggle. Both UTC and local timezone results are shown side by side so you can verify exactly how a timestamp maps to your wall clock time. Need to convert between time zones? The time zone converter handles that.
All conversions happen locally in your browser using the JavaScript Date API. No data is sent to a server, and the tool works offline once loaded.
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp (also called epoch time) is the number of seconds that have elapsed since January 1, 1970 at 00:00:00 UTC, not counting leap seconds. It is a simple, timezone-independent way to represent a point in time and is used extensively in programming, databases, and APIs.
What is the difference between seconds and milliseconds timestamps?
A standard Unix timestamp counts seconds since the epoch and is typically 10 digits long (e.g., 1700000000). Many programming languages and APIs - notably JavaScript - use millisecond timestamps that are 13 digits long (e.g., 1700000000000). This tool detects and converts both formats.
Will Unix timestamps run out of space?
On systems that store Unix time as a signed 32-bit integer, timestamps will overflow on January 19, 2038 - a problem known as the Year 2038 issue. Most modern systems now use 64-bit integers, which extend the range billions of years into the future.
Why does the current timestamp keep changing?
The live clock at the top of the tool updates every second to show the current Unix timestamp in real time. This is useful for grabbing the exact current time for logging, debugging, or inserting into code.