Epoch Converter
Convert Unix timestamps to human-readable dates and vice versa.
Unix time (also known as Epoch time) is a system for describing a point in time. It is the number of seconds that have elapsed since the Unix Epoch, minus leap seconds.
The Unix Epoch is 00:00:00 UTC on 1 January 1970.
How Unix Time Works
Unlike human-readable dates which vary by timezone, calendar format, and language, Unix time is a single integer that increases every second. This makes it incredibly efficient for computers to store, sort, and calculate time differences.
Second vs Milliseconds
- Seconds (10 digits): Standard Unix timestamp (e.g.,
1710668400). - Milliseconds (13 digits): Often used in JavaScript (
Date.now()) and Java (e.g.,1710668400000). - Microseconds (16 digits): Used in high-precision logging and databases.
Why is it used?
- Platform Independence: It’s the same on Windows, Mac, Linux, and specialized hardware.
- Simplified Arithmetic: To find the time 24 hours from now, you simply add
86400(60 * 60 * 24) to the current timestamp. - Database Efficiency: Storing an integer is much faster for indexing and querying than storing a complex date string.
Common Epoch Pitfalls
The Year 2038 Problem
On 32-bit systems, the maximum value for a signed 32-bit integer is 2,147,483,647. This value will be reached on January 19, 2038. After this point, many older systems will “roll over” and fail. Modern 64-bit systems have a limit so far in the future that even the universe might not last that long!
Timezones
Unix time is always in UTC. When you convert it to a human-readable date, the result depends on the timezone of your computer (Local Time). Our tool shows you both UTC and your Local Time for clarity.
How to use this tool
- Current Time: The box at the top shows the current Unix timestamp in real-time.
- Timestamp to Date: Paste a number into the input field to see its human-readable equivalent.
- Date to Timestamp: Select a date and time to generate the corresponding Unix integer.