Enter a duration in milliseconds or seconds and the tool renders a compact humanized string and a unit-by-unit breakdown, perfect for describing elapsed time.
Pick the unit that matches your source. Timestamps and performance APIs are usually milliseconds; many APIs report seconds.
The total is divided into days, hours, minutes and seconds, and only non-zero units are shown, e.g. 2h 5m.
It stops at days for accuracy, since months and years vary in length and would make elapsed-time output ambiguous.