What is a Unix timestamp?

A Unix timestamp is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC (called the Unix epoch). It's a single number representing any point in time, independent of timezone.

What is the difference between seconds and milliseconds timestamps?

Unix timestamps in seconds are standard (10 digits as of 2024). Millisecond timestamps (used in JavaScript's Date.now()) are 1000x larger (13 digits). Use seconds for most systems; milliseconds for JavaScript.

What is the maximum Unix timestamp?

The 32-bit signed integer max is 2,147,483,647 = January 19, 2038, 03:14:07 UTC (the "Year 2038 problem"). 64-bit timestamps can represent dates billions of years into the future.

What timezone are Unix timestamps in?

Unix timestamps are always in UTC (Coordinated Universal Time). They represent the same moment regardless of what timezone you're in. The local time display depends on your browser's timezone setting.

How do I get the current Unix timestamp in JavaScript?

Math.floor(Date.now() / 1000) for seconds, or Date.now() for milliseconds. In Python: import time; int(time.time()). In PHP: time().

Unix Timestamp Converter - Epoch to Date Online Free

How to Use Unix Timestamp Converter

1
View the current Unix timestamp at the top of the page (auto-updates).
2
To convert timestamp to date: enter the Unix timestamp (seconds or ms) and click "Convert".
3
To convert date to timestamp: enter the date and time, select the timezone, and click "Convert".
4
View the timestamp in multiple formats: local time, UTC, ISO 8601.
5
Copy any result with the copy button.

About Unix Timestamp Converter

Convert Unix timestamps (epoch time) to human-readable dates and times, and vice versa. A Unix timestamp is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC (the Unix epoch). It is widely used in programming, databases, APIs, and system logs.

Key Features

Seconds and Milliseconds: Handles both Unix seconds (10-digit) and JavaScript milliseconds (13-digit) timestamps.
Multiple Formats: Shows results in local time, UTC, and ISO 8601 format simultaneously.
Date to Timestamp: Convert any date and time back to its Unix timestamp with timezone selection.
Live Counter: Current Unix timestamp shown at the top, auto-updating every second — handy for testing.
Copy Results: One-click copy for any output value.

Who Is This For?

This is an essential tool for developers debugging API responses, analyzing logs, working with database timestamps, and understanding cron job schedules. Anyone who encounters epoch time in their work will benefit from this converter.

Privacy & Security

Runs 100% in your browser — no signup, no uploads, no data stored.

Unix Timestamp Converter

Timestamp → Date

Date → Timestamp