a free YouTube playlist length calculator that helps you instantly figure out how long any playlist (or even a single video) will take to watch. Just paste a playlist URL, a video URL from a playlist, or a playlist ID, hit “Calculate,” and the tool fetches each video’s duration and adds everything up into a clear total time in hours, minutes, and seconds. 

It’s built for planning: you can calculate only a specific video range (for example, videos 31–100), compare watch time at common playback speeds like 1.25×, 1.5×, 1.75×, and 2×, or enter a custom speed to match your study or binge-watching habits.  The site also supports processing multiple playlist links at once, and it offers an optional “API Key” field if you want to use your own YouTube API key for retrieval. 

For heavier planning, the tool includes extras like daily watch planning (estimate how many days it takes to finish) and Excel export with video details and clickable YouTube links, making it handy for courses, revision schedules, and curated learning lists.