How ISO 8601 duration converter works
ISO 8601 duration parser breaks down a duration string in the P1Y2M3DT4H5M6S format into its human-readable components, years, months, days, hours, minutes, seconds, and also gives the total in seconds for quick comparisons. It is the tool for developers and data engineers who work with ISO 8601 durations in APIs, databases, calendaring systems and standards-compliant date arithmetic.
This is distinct from the Time duration tool, which works with two plain clock times and is aimed at everyday use. And it is distinct from the Timesheet tool, which is for tracking worked hours. ISO 8601 duration parser is narrowly focused on the standard format and its numeric decomposition, and it also works in reverse, assembling a canonical duration string from individual year, month, day and time values.