Developer Tool
Enter a duration in hours, minutes, and seconds to get the total in every unit — or go the other way from a raw number of seconds.
Video and audio editing timelines, workout and interval timers, billing systems that meter by the second, and API rate limits expressed as a duration all eventually need a plain total-seconds number for storage or calculation — and converting "2 hours 15 minutes" by hand is exactly the kind of arithmetic that's easy to get wrong under time pressure.
Need the gap between two clock times instead of a duration you already know? Use the Time Duration Calculator.
Related
Hours and minutes between two specific times.
Parse or build the formal P#Y#M#DT#H#M#S format.
Seconds, milliseconds, microseconds, and nanoseconds.