How to Convert Unix Timestamps Online Translating server time takes just a second. Follow these steps:
Select Your Conversion: Choose whether you want to convert a "Timestamp to Date" or a "Date to Timestamp."
Enter Your Data: Paste your 10-digit or 13-digit Unix timestamp, or use the date picker to select a specific calendar day and time.
Instant Translation: Our tool instantly calculates the conversion. If you enter a timestamp, we will immediately display the exact date in both Universal Coordinated Time (UTC) and your system's Local Time Zone.
Copy to Clipboard: Click the copy button to grab your perfectly formatted date string or integer to paste directly into your code or SQL query.
What is a Unix Timestamp (Epoch Time)? A Unix timestamp (often called Epoch time or POSIX time) is a system for describing a specific point in time. It is defined as the total number of seconds that have elapsed since the Unix Epoch, which occurred at exactly 00:00:00 UTC on January 1, 1970 (minus leap seconds). For example, a timestamp of 1700000000 means exactly one billion, seven hundred million seconds have passed since New Year's Day, 1970.
Why Do Developers Use Epoch Time? Human dates are incredibly messy. Handling different time zones, daylight saving time changes, leap years, and string formats (like MM/DD/YYYY vs. DD/MM/YYYY) is a nightmare for computer systems. Unix time solves this by representing time as a single, absolute integer.
Database Efficiency: Storing a single integer in a MySQL or PostgreSQL database takes up much less space than a long text string.
Easy Sorting: Sorting events chronologically is mathematically simple when you are just comparing numbers.
Universal Standard: A Unix timestamp is identical regardless of where you are in the world. 1600000000 is the exact same moment in time in Tokyo as it is in New York.
Seconds vs. Milliseconds: The JavaScript Trap One of the most common errors in web development involves the length of the timestamp. Standard Unix time counts in seconds (typically a 10-digit number). However, modern programming languages like JavaScript default to counting in milliseconds (a 13-digit number). If you pass a 10-digit Unix timestamp into a JavaScript Date() object without multiplying it by 1,000, your code will render a date back in January 1970. Our tool automatically detects the length of your input to ensure your conversion is accurate, whether you are dealing with seconds or milliseconds.