PlaybackCalc tells you exactly how long any YouTube video, podcast, lecture, or audiobook will take at a given playback speed — instantly, no sign-up needed. Enter the original duration, pick your speed (1.25x, 1.5x, 1.75x, 2x, or any custom value), and see your real watch time plus minutes saved. Built for students binge-watching lectures, podcast fans short on time, and audiobook readers trying to hit a chapter before bed. 100% free, works in your browser, no data sent anywhere.