You’re here because you’re wondering how long Instagram Reels can be.
Have you thought about how long they should be?
Creating a well-watched Instagram Reel is just as much art as it is science. I think folks will be surprised to hear the latter — but working with the Instagram algorithm requires some rigorous experimentation.
Scroll-stopping hooks, post timing, keywords, and reel length are all variables I’ve held under the microscope on my Instagram creator journey. (Demystifying the black box that is a social media algorithm is my Roman Empire.)
And now I have some quantitative data on Instagram Reel length. We looked at over 2.7 million Instagram Reels published through Buffer between January 1 and August 15, 2026, with the help of Buffer’s data science team (thank you, Steve and Iggy!).
This study was fascinating! I almost expected the super-short clips to be the top performers, especially in terms of reach and engagement. That couldn’t have been further from the truth.
- Reels between 90 seconds and three minutes got the most reach.
- Reels longer than 3 minutes got the most engagement.
👉
Before the numbers, the usual terms and conditions apply. The effect is real but modest — we’re talking about single-digit percentages. And this is an association, rather than a cheat code: stretching your next reel to 100 seconds will not add 7% to your reach by itself.
If you’re interested in the methodology behind the study, you’ll find that below. First, we’ll get straight into the Instagram limits.
How long can Instagram Reels be?
Instagram Reels can be up to 20 minutes long, whether you record in the Instagram camera or upload from your camera roll. (This rolled out gradually, so a few accounts may still see a 90-second or three-minute cap.)
The catch is that only reels of three minutes or less are eligible for recommendation to new audiences. Go past 180 seconds and Instagram shows you a little alert: “Reels over 3 minutes won’t be recommended to new audiences.” Your followers can still see the reel, but it’s unlikely to appear in the reels tab, on explore or in non-followers’ home feeds.
| Limit or benchmark | Instagram Reels length |
|---|---|
| Maximum length | 20 minutes |
| Maximum length to be recommended to non-followers | 3 minutes |
| Best length for reach (Buffer data) | 90 seconds to 3 minutes |
| Best length for engagement (Buffer data) | Over 3 minutes |
90-second to 3-minute reels get the most reach
Instagram Reels between 90 seconds and three minutes reached roughly 4–7% more unique accounts than the same account’s typical reel.
We compared each account’s performance to itself, so the data wasn’t skewed by Instagrammers with enormous followings — more on that below!
| Reel length | Reach vs. that account’s baseline |
|---|---|
| 90–179 seconds | +7.4% |
| 30–59 seconds | +2.7% |
| 60–89 seconds | +1.6% |
| 15–29 seconds | −0.9% |
| Under 15 seconds | −1.5% |
| 180 seconds or longer | −49.3% |
That +7.4% is an average across accounts. The account sitting in the middle of the pack saw a smaller lift, closer to 4%. When the average sits well above the middle like that, it usually means a minority of accounts did unusually well and pulled the average up. So most accounts saw something nearer the bottom of that range than the top — which is why we’re quoting a range at all, rather than one tidy number (even though it’s making my eye twitch a little).
Reach is the metric I find most valuable here because it counts unique accounts that saw the reel. It’s the closest thing we have to a measure of distribution: how far Instagram pushed your video beyond the people who already follow you.
Reach drops significantly for reels more than 3 minutes long
Reels of 180 seconds or longer reached 49.3% fewer people than the same account’s baseline, and got 45.9% fewer views.
Instagram veterans will likely know why: upload a reel longer than 3 minutes and you’ll get a little alert on the app that says “Reels over 3 minutes won’t be recommended to new audiences.”
In other words, three-minute+ reels likely won’t appear in the reels feed, explore page, or as recommended videos in the home feed of folks who might like your content.
Head of Instagram, Adam Mosseri, is pretty clear on the fact that Instagram is not trying to be YouTube — long-form video is not the platform’s focus.
So, while you technically can upload reels that are as long as 20 minutes, anything over 180 seconds will likely cost you reach.
Long reels get more engagement
Interestingly, this doesn’t mean shorter reels are always better. If you’re looking to nurture the audience you already have, long reels could be a strong bet.
Reels of 180 seconds or more had an engagement rate 2.65 percentage points above their account’s baseline — comfortably the highest of any bucket. For the typical account, the lift was smaller at 1.1 points, but it was still the standout.
So those reels reach about half as many people, and the people they do reach are more likely to comment, like, save, or share. It makes sense, really. Somebody who sits through four minutes of your video has already opted in. There are fewer people in the room, but the room is… a little friendlier?
In my mind, this means length is more about your goals than performance. If you’re trying to get in front of people who’ve never heard of you, three minutes is your hard stop. If you’re deepening a relationship with people who already follow you, going longer could be really worthwhile.
We found a similar reach-versus-engagement trade-off with carousels, which suggests this pattern isn’t unique to reels.
Below 90 seconds, length doesn’t seem to matter
The buckets from under 15 seconds up to 89 seconds all landed within about three percent of baseline, in both directions. Under-15s were 1.5% below on reach; 30–59s were 2.7% above. Those gaps are small enough that I wouldn’t rebuild a content calendar around them.
So, if you’ve been agonizing over whether to cut a reel from 45 seconds to 30 (been there, friend), our data suggests that decision is close to a coin flip. The hook, the topic, the editing, and the value you’re providing almost certainly matter more than the difference between 30 and 60 seconds.
In this case, quality > quantity (or lack thereof).
So how long should your reels be?
If reach is your goal, I’d suggest 90 seconds to three minutes as your sweet spot.
If you’re making something longer than three minutes, make it for your existing audience. Tutorials, long-form storytelling, and community content all have a reasonable case.
If this length is new territory for you, I highly recommend trial reels. They’re a low-risk way to test this out, since they go to non-followers first. For best results, spin up two versions of the same reel, keeping variables like editing, hook, music, etc. all exactly the same. Let them sit for around 24 hours to get a clear view of which could work best. I hope you’ll be surprised!
Interestingly, you can still share trial reels for reels longer than three minutes (I tested it) if this is something you’d like to explore.
And if you want the fuller picture on what moves Instagram distribution, length is one factor among several — the best time to post, according to 9.6 million posts and how the Instagram algorithm actually works are great reads for a deeper dive.
How to post a reel longer than three minutes
If you’ve got a tutorial or a long-form story that won’t fit into 180 seconds, you can still post it. Record it in the Instagram camera or upload it from your camera roll as usual. Anything up to 20 minutes will go through.
Just go in with your eyes open. In our data, reels over three minutes reached 49.3% fewer people than the same account’s baseline. The people who did watch engaged more, though: these reels had an engagement rate 2.65 percentage points above baseline, the highest of any length we looked at.
If you’d rather not give up the reach, there are two workarounds:
- Cut it into a series. Two two-minute parts can both be recommended to new audiences, where one four-minute reel can’t.
- Post a short version and send people to the long one. A 90-second teaser that points to the full video on your profile or in your Stories keeps the reach and still serves the people who want the deep dive.
This section answers the “People also ask” questions Google shows for these searches: “Can an Instagram reel be over 3 minutes?”, “How do I post a 5 minute reel on Instagram?” and “Can I post a 7 minute reel on Instagram?”.
Instagram Reels vs. TikTok vs. YouTube Shorts length
If you’re cross-posting the same video, here’s how the limits compare:
| Platform | Maximum length | Notes |
|---|---|---|
| Instagram Reels | 20 minutes | Only reels of 3 minutes or less are recommended to non-followers |
| TikTok | 10 minutes recorded in-app, 60 minutes uploaded | Uploaded videos can run longer than ones recorded in the TikTok camera |
| YouTube Shorts | 3 minutes | Anything longer publishes as a regular YouTube video |
A three-minute cap works across all three, which makes cross-posting with Buffer a little simpler (one video, no re-edits).
Study methodology
Every Instagram Reel sent through Buffer between January 1 and August 15, 2026, that was successfully published, wasn’t deleted, and had a recorded duration. The data set was 3,780,620 reels with a usable length. We narrowed this down a little further for accuracy (more below).
We sorted them into six buckets: under 15 seconds, 15–29 seconds, 30–59 seconds, 60–89 seconds, 90–179 seconds, and 180 seconds or longer.
The tricky part was comparing them fairly. If you simply average reach across all Instagram Reels, a handful of enormous accounts skew the data, and you end up measuring audience size rather than length.
So instead of comparing reels to each other, we compared every account to itself. An account had to have posted at least three reels in a bucket for that bucket to be included in the study, and had to have used at least two different buckets to enter the comparison at all.
Then we asked: when the same account posts reels of different lengths, which lengths land above that account’s normal level?
That left 2,730,166 reels in the reach comparison and 2,463,999 in the engagement-rate comparison. Views and reach are wildly skewed — one viral reel can out-reach a thousand ordinary ones — so both were log-transformed before comparison, which is a statistician’s way of stopping a single monster post from setting the average for everyone. Engagement rate was capped at the 99th percentile, around 54.8%, because the raw data contains values as high as 827,200% where the denominator was tiny or broken.
More Instagram Reels resources
FAQ
What is the maximum length for an Instagram Reel?
20 minutes. Only reels of three minutes or less can be recommended to people who don’t follow you, though, so most creators treat three minutes as the practical limit.
Can an Instagram Reel be over 3 minutes?
Yes, up to 20 minutes. But Instagram won’t recommend it to new audiences. In our data, these reels reached about half as many people as an account’s typical reel.
How long is too long for an Instagram Reel?
If you want to reach new people, anything over three minutes. If you’re posting for your existing followers, longer reels had the highest engagement rate in our analysis.
Is a 5-second reel too short?
Not necessarily. Reels under 15 seconds landed just 1.5% below their account’s average reach in our data, which is close enough that the hook and topic will matter far more than the length.
How long can Instagram Stories be?
Up to 60 seconds per clip. Longer videos are split into multiple 60-second Stories automatically.
What is the best length for an Instagram Reel?
For reach, 90 seconds to three minutes. In our analysis of 2.7 million reels, that bucket reached 4–7% more unique accounts than each account’s own average. Below 90 seconds, the differences between lengths were small enough to ignore.
Why do reels over three minutes perform badly?
In our data, they reached 49.3% fewer people than the same account’s baseline. Instagram doesn’t recommend reels past three minutes to non-followers.
Should I make longer reels then?
Only if you’re making them for people who already follow you. Reels over three minutes had the highest engagement rate in our data — 2.65 percentage points above baseline — but from roughly half the audience.
Does reel length matter more than content?
Our data suggests not, at least below 90 seconds. Every bucket from under 15 seconds to 89 seconds sat within about three percent of baseline.