Playlist · MIT OpenCourseWare
MIT 5.111 Principles of Chemical Science, Fall 2014
Listed in MIT OpenCourseWare courses on YouTube, ranked by total hours
Total watch time
1d 1h 25m
at 1× speed · exactly 1 day, 1 hour, 24 minutes, 55 seconds at 1×
At an hour a day you'd finish in 26 days
The shape of the course
Each column is one video, to scale
WatchedTo watch
Next time, skip the copying: change youtube.com to playlistduration.com in any playlist, video or channel address and it opens here. Or see the total on YouTube itself, with our extension for Chrome, Firefox or Edge.
Your plan
Plan to finish
About 26 days at an hour a day
Pick a daily pace and the days you'll watch. Ticked videos are skipped.
At one hour a day, every day, this playlist takes about 26 days. Turn on JavaScript to plan around your week.
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Videos (35)
1d 1h 25m in total · tick what you've watched
Tick videos you've watched — progress is saved in this browser. Titles open on YouTube in a new tab.
No videos match that filter.
For your README
Embed a badge
Show the watch time in a README or course description — it links back here and updates itself
[](https://playlistduration.com/playlist/PLUl4u3cNGP63LOmB3_O0xbgZVZibxj4rb)<a href="https://playlistduration.com/playlist/PLUl4u3cNGP63LOmB3_O0xbgZVZibxj4rb"><img src="https://playlistduration.com/badge/playlist/PLUl4u3cNGP63LOmB3_O0xbgZVZibxj4rb.svg" alt="Watch time: 1d 1h 25m · 35 videos" width="221" height="20"></a>Add ?speed=1.5 to the image URL for the time at that speed, ?label=Course to change the left text, or ?style=flat-square for square corners.
Want the numbers themselves? GET https://playlistduration.com/api/v1/playlist/PLUl4u3cNGP63LOmB3_O0xbgZVZibxj4rb returns them as JSON — free, no key. API docs →
Data from the YouTube Data API as of 2026-11-05 (cached). Private or deleted videos are excluded from totals.