Epoch → Date
Date → Epoch
How to Use This Tool
Enter a timestamp
Paste a Unix epoch timestamp (seconds or milliseconds).
View the conversion
See the human-readable date and time in multiple formats.
Convert dates to epoch
Enter a date to get the corresponding epoch timestamp.
Features
Bidirectional Conversion
Convert epoch to date or date to epoch in both directions.
Auto-Detection
Automatically detects whether input is seconds or milliseconds.
Timezone Support
View conversions in UTC and your local timezone.
Multiple Formats
Output in ISO 8601, RFC 2822, and human-readable formats.
Frequently Asked Questions
What is Unix epoch time?
Unix epoch time (or Unix timestamp) counts the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It is the standard way computers represent time internally and is used in APIs, databases, and log files.
What is the difference between seconds and milliseconds?
Unix timestamps in seconds are 10 digits (e.g., 1700000000). Millisecond timestamps are 13 digits (e.g., 1700000000000). JavaScript Date.now() returns milliseconds; most Unix systems use seconds.
What is the Year 2038 problem?
Systems using a signed 32-bit integer for epoch time will overflow on January 19, 2038. Most modern systems use 64-bit integers, which extend the range to billions of years. This tool uses 64-bit timestamps.
Why do developers use epoch time?
Epoch timestamps are timezone-independent, easy to compare and sort, compact to store, and unambiguous. They avoid the parsing issues that come with date string formats.