Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports both seconds and milliseconds.
How to Use the Timestamp Converter
This tool provides two conversion modes: convert a Unix timestamp to a readable date, or convert a date/time to a Unix timestamp. The current Unix timestamp is displayed at the top for quick reference.
Features
- Bi-directional Conversion - Convert timestamps to dates or dates to timestamps
- Auto-detection - Automatically detects if input is in seconds or milliseconds
- Multiple Formats - View results in ISO 8601, UTC, local time, and more
- Relative Time - See how far in the past or future the date is
- Live Clock - Always shows the current Unix timestamp
Useful with the Cron Generator for schedules and the JSON Formatter when inspecting API timestamps.
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp (also known as Epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970 at 00:00:00 UTC. This date is known as the "Unix Epoch".
Seconds vs Milliseconds?
Traditional Unix timestamps are in seconds (10 digits like 1704067200). JavaScript and Java use milliseconds (13 digits like 1704067200000). This tool automatically detects which format you're using.
What about timezones?
Unix timestamps are always in UTC (Coordinated Universal Time). When converting to a readable date, the tool shows both UTC and your local timezone for comparison.
What is the Year 2038 problem?
32-bit systems store timestamps as signed integers, which will overflow on January 19, 2038. This tool uses 64-bit JavaScript numbers and is not affected by this limitation.