Generate sequential epoch timestamps with custom step intervals for database testing & seeders.
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.
Choose your start and end date/time.
Select intervals in hours, days, weeks, or months.
Copy as seconds, milliseconds, ISO strings, or a JSON array.
10-digit Unix seconds, 13-digit milliseconds, ISO-8601 strings, and structured JSON arrays.
To preserve browser performance, sequences generate up to 1,000 items per batch.
Zero-egress companion tools in the Date & Time suite
Convert times across world timezones and compute exact business days.
Convert between Unix timestamps and human-readable UTC/ISO dates.
Calculate exact intervals, working business days, and future date offsets.
Calculate calendar and custom fiscal year quarters starting in any month (e.g. Feb, July, Oct).
