Milliseconds to Date Converter
Convert millisecond timestamps to human-readable dates instantly. JavaScript's Date.now(), Java's System.currentTimeMillis(), and many APIs return timestamps in milliseconds (13 digits). Paste a millisecond timestamp and see it in every format — UTC, ISO 8601, local time, and relative time.
Frequently Asked Questions
›How do I know if a timestamp is in milliseconds?
Millisecond timestamps have 13 digits (e.g., 1711756800000), while second timestamps have 10 digits (e.g., 1711756800). This tool auto-detects the format, but you can convert between them by multiplying or dividing by 1000.
›Which languages use millisecond timestamps?
JavaScript (Date.now()), Java (System.currentTimeMillis()), Dart, and many REST APIs return millisecond timestamps. Python, Ruby, PHP, and most Unix tools use seconds by default.
›Can I convert seconds to milliseconds?
Yes. Enter a 10-digit second timestamp and the converter will show both the seconds and milliseconds representations in the output.