YouTube Playlist
Length Calculator
Paste a playlist and get its real runtime — at your playback speed, minus what you have already watched, turned into a finish date you can actually plan around.
The math
One number, three adjustments
A playlist page shows its video count and nothing about its length. The total is a simple sum, but the number worth planning around is that sum minus what you have watched, divided by the speed you actually use.
From many durations to one figure
The watched portion is subtracted before the speed divisor, which is why marking your progress changes the saving as well as the total.
Private and deleted videos count for nothing
A playlist that reads 48 videos often has three or four unavailable entries. They keep their slot in the numbering but contribute no duration, so the total is always shorter than the count suggests.
Speed is a divisor, not a discount
1.5× removes a third of the clock, not half. 2× is the only setting that halves it, and it is also the one most people cannot follow a dense explanation at.
The average hides the shape
A 20-minute average can mean twenty-four even lessons or eight short ones and three hour-long builds. The spread chart tells you whether a session fits in a lunch break.
Planning
A total is trivia, a schedule is useful
Eighteen hours means nothing on its own. Forty-five minutes a night for three and a half weeks is a commitment you can either make or decline.
45 minutes a day, two weeks in
Mark your position in the list after each session. The planner recalculates from where you actually are rather than from the start.
Three ways people use this
Decide before you commit
- Courses
- Check the real commitment before starting a 60-part tutorial series.
- Travel
- Fit a queue to a flight or commute instead of guessing at the gate.
- Editing
- Audit your own back catalogue — total runtime, average length, outliers.
Tip
Plan at the speed you use for difficult material, not your best case. A schedule built on 2× tends to quietly become a schedule you abandon.
Speed reference
What each speed takes off the clock
The saving is a fixed fraction, the same on every playlist. A ten-hour example makes it concrete.
The saving shrinks as you climb
Going from 1× to 1.5× removes a third. Going from 1.5× to 2× removes only another sixth of the original. Past 1.5× you pay a lot of comprehension for a little time.
Speed is per-device, not per-account
YouTube remembers the setting on the browser or app you set it in. A plan built at 1.5× on a laptop quietly reverts to 1× on a TV.
Worth knowing
Custom speeds between the presets exist on desktop. They change the arithmetic in exactly the same way — divide, never subtract.
Playlist links
Not every list has a length
A real playlist has a fixed set of videos and an ID beginning PL, UU or OL. Mixes, queues and personal lists look similar in the address bar but cannot be counted.
These work
youtube.com/playlist?list=PL…
The playlist page itself. The cleanest thing to paste.
youtube.com/watch?v=…&list=PL…
Copied while watching inside a playlist. The video part is ignored.
list=UU… / list=OL…
A channel's uploads feed and album playlists. Both are ordinary lists underneath.
PLp5Q8w9E1nK…
The bare ID on its own, if that is all you have.
These cannot be counted
list=RD… — Mix or radio
Generated endlessly as you listen. There is no final video, so there is no total.
list=WL — Watch Later
Tied to your signed-in account and private by design.
list=LL — Liked videos
Private unless you deliberately publish it in your own settings.
The play queue
Whatever you have queued up lives in the player, not in a link. Save it as a playlist first.
To publish a private list: open it, choose Edit, and set visibility to unlisted. An unlisted playlist is readable from its link but stays out of search.
How to use it
Three steps, then come back each session
The calculator is most useful on the second visit, once there is progress to subtract.
Paste the playlist link
Any link containing ?list= works, including one copied while a video is playing inside the playlist.
Set speed and mark your place
Tap the last video you finished. Everything above it is subtracted before the speed divisor, so the headline figure is genuinely what you have left.
Pick a daily budget you will keep
The finish date is only as honest as the slider. Choose the amount you manage on a bad week, not a good one.
Finishing it
Most playlists are abandoned, not completed
Usually in the third week, and almost never because the material got harder. A long list gets finished by small sessions that keep happening, not by the weekend you planned to do all of it in.
Two ways through the same playlist
A binge covers ground quickly and then costs you the habit. The steady line looks unambitious for a fortnight and then simply finishes.
Book the slot, not the finish line
A start time you keep beats a deadline you invent. Twenty minutes after dinner, every weekday, will outrun any weekend you intended to clear.
Stop while it is still going well
Ending mid-lesson rather than at a natural break leaves an obvious place to restart. Fresh sessions are far harder to begin than unfinished ones.
Let the long ones have their own day
The spread chart shows which videos run well over average. Pair a short one with a short evening and leave the hour-long build for a day you have an hour.
Skipping is allowed, stopping is the risk
Nothing about a playlist requires order or completeness. Jump the section you already know rather than treating it as a wall.
Use the number above
Mark your place at the end of every session. Watching the figure fall from eighteen hours to four is a better motivator than any streak counter.
Questions
Frequently asked
Does it work on private playlists?
No. Public and unlisted playlists can be read from their link; a private one is only visible to your own signed-in account, which this tool never asks for.
Is there a limit on playlist size?
The first 500 videos are read, which covers all but the largest playlists. Beyond that the result says so plainly and reports the runtime of the part it read, rather than showing a total that is quietly too small.
Can I calculate a whole channel?
Paste the channel's uploads playlist. Every channel has one, and most channel pages link it under Videos → Play all.
Are ads included in the total?
No. Durations are the video content only. On an ad-heavy playlist without Premium, expect the real sitting time to run noticeably longer than the figure here.
Why is the count higher than the videos listed?
Deleted and private entries still occupy a position in the playlist, so YouTube counts them. They are skipped in the sum, so the total reflects only what you can actually watch.
Is my progress saved?
Only in this browser tab, and nothing is sent anywhere. Marking where you are is a calculation aid, not an account feature.
Keep going
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