ISO 8601 Duration String Parser & Generator
Construct and evaluate RFC 3339 / ISO 8601 duration intervals (PnYnMnDTnHnMnS) and total timestamps.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
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.
How to Use ISO 8601 Duration String Parser & Generator
Enter years, months, days, hours, minutes, and seconds.
Review the standardized P...T... duration output.
Copy the ISO duration string for API requests or temporal math.
Frequently Asked Questions
What does the 'T' separator signify in ISO 8601?
The 'T' character separates date components (Years, Months, Days) from time components (Hours, Minutes, Seconds).
Is P1Y2M10DT2H30M standard compliant?
Yes, it denotes 1 Year, 2 Months, 10 Days, 2 Hours, and 30 Minutes.
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