Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and dates back to Unix timestamps instantly. Supports both seconds and milliseconds precision, ISO 8601 output, relative time display, and timezone conversion. The live clock shows the current Unix timestamp updating in real-time.
Frequently Asked Questions
›What is a Unix timestamp?
A Unix timestamp (also called epoch time or POSIX time) counts the number of seconds since January 1, 1970 00:00:00 UTC. It's a simple, timezone-independent way to represent a moment in time. For example, 1711756800 represents March 30, 2024.
›Seconds vs milliseconds — how do I tell the difference?
Unix timestamps in seconds have 10 digits (e.g., 1711756800). Millisecond timestamps have 13 digits (e.g., 1711756800000). This tool auto-detects which format you're using based on the number of digits.
›Is this private?
Yes. All conversions happen in your browser using JavaScript's built-in Date object. No data is sent to any server.