How to See How Long a YouTube Playlist Is

Open any playlist on the web or in the mobile app. You get the title, the number of videos, the view count, and a runtime badge on each thumbnail. There is no total anywhere on the page, and no setting that turns one on. YouTube Music does show a total for its own playlists, which makes the omission on YouTube proper look like a decision rather than an oversight.

The effect on you is the same whatever the reason. A playlist that reads '212 videos' invites a click. The same playlist labeled '96 hours' invites a second thought. The one number that decides whether a course fits into your week is the number that is missing.

The data behind it is not secret. Every video carries its exact runtime, and the official YouTube Data API returns those runtimes for any public playlist. Only the addition is missing, and that is what all three methods below do.

This needs nothing but the playlist page, so it is the fallback when you cannot reach any other tool.

1. Open the playlist and note the video count shown at the top.
2. Read the runtime badge on about ten videos spread across the list. Take a few from the start, a few from the middle, and a few from the end, not the first ten.
3. Add those runtimes together and divide by how many you sampled. That is your average video length.
4. Multiply the average by the video count. That is your estimate.

Treat the answer as a range rather than a figure. Three things pull it off target:

• Uneven lengths. A course playlist often opens with a two minute welcome clip and closes with a fifty minute project walkthrough. A ten video sample out of two hundred can land twenty to thirty percent away from the truth in either direction.
• Dead entries. The count YouTube shows includes videos that were deleted, set to private, or blocked in your country since the playlist was built. They have no runtime at all, so they inflate every estimate that multiplies by the count.
• Rounding. Reading '12:04' as twelve minutes throws away four seconds per video. Across three hundred videos that is twenty minutes of error from rounding alone.

Good enough to answer 'is this an evening or a fortnight'. Not good enough to plan study sessions around.

Several Chrome and Firefox extensions inject a total into the YouTube playlist page itself. That is genuinely convenient, because the number appears where you already are. The trade is what you agree to at install time.

• Permissions. An extension that rewrites the playlist page has to ask for permission to read and change your data on youtube.com. That covers the whole site, including your account pages, for as long as it stays installed.
• Ownership. Extensions get sold, and the permission you granted transfers with them. A tool that behaved for three years can ship a very different update under a new owner without asking you again.
• Breakage. They depend on YouTube's page markup, which changes without notice. When it does, the total disappears or quietly starts reporting nonsense, and you only find out if you happen to check it.
• Desktop only. Extensions do not run in Chrome or Safari on iOS and Android, so this method disappears on the device most people watch on.

Reasonable if you check playlist lengths daily and you install from a maintained listing with real reviews. Heavy machinery for a question you ask once a month.

This site reads the playlist through the official API and adds up the runtimes, so the total is exact rather than sampled. Nothing is installed, and it behaves the same on a phone as on a desktop.

1. Copy the playlist link. Any YouTube URL carrying a list= parameter works, including a watch link you opened from inside the playlist.
2. Paste it into the box on the home page. The API key field underneath is optional and can stay empty.
3. Press Calculate. Playlists are read in pages of fifty videos, so a list with several hundred entries takes a few extra seconds.
4. Read the totals. You get the exact total runtime, the average, shortest and longest video, and the full list with each video's runtime beside it.

Two extras earn their keep once the playlist is loaded:

• Pick a start and an end video to total only part of a series, for example lesson 5 to lesson 12 of a course.
• Switch the playback speed to 1.25x, 1.5x, 1.75x or 2x to see what the playlist really costs you at the speed you watch.

The total covers every video whose runtime YouTube reports. Deleted, private and region blocked entries report nothing, so they are left out, which is why the calculated video count can be lower than the number printed on the playlist page. A live stream that is still running has no fixed end, so it is skipped as well.

Open the calculator and paste your link.

An unlisted playlist is not the problem people expect it to be. YouTube treats it like a public one for anyone holding the link, so the calculator measures it exactly as it measures a public list.

A private playlist is different. YouTube hands its contents to a session signed in as the owner and to nobody else, so a calculator working from a shared API key receives an empty list no matter who pasted the link. The only route to a private playlist is to sign in with Google yourself and let the page read it with your own permission. Where this site offers such a sign-in step, the access requested is read-only, the token stays in the browser tab, and results from a signed-in lookup are never cached.

Two lists stay out of reach whoever signs in. YouTube's API stopped returning Watch Later (a list=WL link) and History (list=HL) in 2016 and never restored them, even for the account that owns them. If the playlist belongs to somebody else and is private, ask the owner to switch it to unlisted and send you the link.

Estimate by hand when you only need to know whether a playlist is an evening or a month, and when you cannot open anything else. Install an extension if you audit playlists every day and the permissions do not bother you. For every other case, pasting the link is faster than sampling ten runtimes and more accurate than any estimate.

Check a playlist's length now. It is free, needs no account, and the result already includes the watch time at 1.5x if you plan to speed through it.