How Long Is Your YouTube Playlist, and How Much Is Left?

The field takes a playlist’s own link or the link of any video opened inside that playlist. A video link carries more than the playlist ID: its index= tells the calculator which entry you are on, and its t= tells it how far into that video you got, so the count begins at that moment instead of at #1. Watch Later, Liked videos and watch history can’t be read this way, because they belong to a signed-in account, and a Mix (its list ID starts with RD) has no fixed set of videos to add up.

Entries are read in batches of 50, and the progress line shows how many have come back. A playlist longer than 1,000 entries asks first whether to read all of it or only the first thousand, since every batch uses part of a daily request allowance that the tools on this site share. Stopping midway keeps what was already read, and the result says plainly that it covers only that part.

What the three totals measure

The large number is what is left in the selected range: every counted video in it that isn’t marked as watched, minus the time already played in the video your link pointed to. Beside it, Full playlist adds up every counted entry, Range covers only the stretch between the two handles, and Watched in range shows how much of that stretch you have ticked off. The speed chips divide only the remaining time, and with anything above 1× selected, the line underneath keeps the normal-speed figure and the difference in view.

Some entries never reach a total. Deleted and private videos stay in a playlist after they disappear, but YouTube no longer reports a length for them; a stream that is live right now has no length yet, and a scheduled stream or premiere can’t be watched yet even if a length is listed. Each kind is named with a count in the line under the totals rather than slipping in as a zero.

Reading the duration map

Every entry is a bar in playlist order with its height set by its length, so a three-hour recording among ten-minute lessons stands out as one tall column before you scroll anywhere. A bar’s color only says whether it is still ahead of you or already marked as watched, which fades it; the stretch outside the range is shaded over, and entries that weren’t counted sit as small grey ticks along the bottom edge. When there are more entries than the map has pixels, each column shows the longest video it covers.

Drag the two handles to set the range, or type the numbers into From and To, which is easier on a phone. Zoom to range spreads the selected stretch across the full width so short videos get their own bars again. Hovering over a bar shows its number and title, and tapping one opens a card for marking it watched or counting from it.

Marks that stay on this device

Below the map, the range is listed video by video with its length. The checkbox marks a video as watched, From here moves the start of the range to that entry, and the search box looks through titles across the whole playlist, which helps when you remember the name of the lesson you stopped on but don’t have its link. Marks are saved in this browser for this playlist and belong to each entry rather than to the video, so a video that appears twice is tracked twice. On the next visit, Start at first unwatched picks up where the marks end, and the button next to it marks everything before the current start as watched in one go.

Details for this range describes the stretch instead of adding it up: a typical length taken from the middle of all its lengths, with the video closest to it as an example, the longest and shortest entries, the share of time taken by the three longest, and how many entries repeat an earlier video. A repeat is counted again, the way the player would play it.

Copy summary puts the totals, the range and what was left out into plain text for notes or a chat. Copy link to this range saves the playlist ID with the current range and speed, and opening that link later reads the playlist afresh with the same settings. Plan the rest in Course Pace Calculator opens that tool, which turns a remaining time like this one into a finish date based on the minutes you have each day.