The technical limit is 3 minutes. YouTube expanded Shorts from 60 seconds up to 3 minutes, and any vertical video under that length that fits the format qualifies for Shorts placement, including the Shorts shelf and the Shorts feed. That's the honest answer to the question people are actually typing into Google.
But the limit and the right length are two different numbers, and mixing them up is where creators lose views.
The limit vs. what actually performs
Just because a Short can run 3 minutes doesn't mean it should. The overwhelming majority of Shorts that perform well are still well under a minute, most in the 15 to 45 second range. The format's entire advantage is that it costs the viewer almost nothing to watch one, and that advantage shrinks fast the longer you stretch it.
Where the extra runway actually helps is a specific category of content: quick tutorials that need a few extra beats to land, before-and-after reveals that need setup time, or a short story with an actual arc instead of a single punchline. If your idea needs 90 seconds to make sense, use 90 seconds. Padding a 20 second idea out to hit some number isn't the same thing.
What we check before we cut a Short long
- Does the first idea land in the first second? Length doesn't fix a slow open, a slow open kills a Short at any length.
- Is every extra second earning its place, or is it there because trimming felt hard?
- Would this idea actually work better as two separate Shorts instead of one long one? Often it would, and you get two uploads out of it instead of one.
The 3 minute ceiling is permission, not a target. Use exactly as much time as the idea needs and cut the rest.
How this fits your posting strategy
If you're weighing Shorts against long-form entirely, that's a separate decision from length within the format itself. Our short-form vs. long-form breakdown covers how to split time and budget between the two. For pure long-form length questions, we've written about how long a full YouTube video should be as well, since that's a different calculation from Shorts.
The short version: the platform gave you up to 3 minutes, but your retention graph is still the only thing that tells you the right length for a specific Short. Cut for the idea, check the graph, adjust next time.
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