Playback Speed Calculator - Know exactly how long any video takes at 1.5x or 2x speed

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.

Hi Product Hunt! 👋 I built PlaybackCalc because I kept doing the same mental math: "If this 2-hour lecture is 1.75x speed… how many minutes is that again?" Turns out most people do this constantly — students before exams, podcast listeners between subway stops, audiobook readers racing to finish a chapter. So I made a dead-simple tool: enter the duration, pick your speed, get the answer instantly. No sign-up, no tracking, just math. It also has dedicated calculators for YouTube, podcasts, audiobooks, and lectures — each optimized for that specific use case. Would love your feedback! What speeds do you usually listen at? I'm a 1.75x person myself 🙂

Playback Speed Calculator - Know exactly how long any video takes at 1.5x or 2x speed

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