Convert Windows 64-bit FILETIME timestamps ($100 ext{ns}$ intervals since Jan 1, 1601 UTC) to standard Unix timestamps.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Configure input parameters, values, or strings in the interactive interface.
Review real-time computation output and copy or download the generated result.
Yes, all computations run 100% locally in your web browser using Web APIs with zero data sent to external servers.
Zero-egress companion tools in the Date & Time suite
Convert Microsoft Excel 1900 date system serial integers into standard ISO 8601 timestamps.
Calculate continuous Julian Day Numbers (JDN) and Modified Julian Date (MJD) from Gregorian dates.
Convert high-precision 19-digit nanosecond timestamps into formatted UTC strings.
Check exact clock shift dates and hour offsets for US, EU, and global timezones.
