Convert between Unix timestamps, human-readable dates, and different time formats instantly
Unix Timestamp Converter is a free online tool that converts between Unix timestamps, human-readable dates, and various time formats. It supports Unix timestamps in both seconds and milliseconds, ISO 8601 format, RFC 2822, and other standard date formats. Perfect for developers, system administrators, and anyone working with timestamps.
A Unix timestamp is the number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC (the Unix Epoch). It's a standard way to represent time in computing systems.
Unix timestamps in seconds are 10 digits (e.g., 1703123456), while milliseconds are 13 digits (e.g., 1703123456789). Milliseconds provide more precision for applications that need sub-second accuracy.
All conversions use JavaScript's Date object and are accurate to the millisecond level. The tool handles timezone conversions and leap years automatically.
Yes, all calculations happen locally in your browser. Your data never leaves your device.
Yes, once loaded, the converter works completely offline in your browser.