How Long Can Instagram Reels Be? App and API Limits
By the Post0 team · Published
Short answer
In the Instagram app, most accounts can make Reels up to 3 minutes long, and some accounts are offered longer options. Reels published through Instagram’s API, which is how scheduling apps post, can be 3 seconds to 15 minutes long and up to 1 GB.
Two limits, depending on how you post
Instagram has changed the Reels length limit several times, and it does not roll changes out to every account at once. That is why you see different answers online. The clearest way to think about it is by how you post.
| How you post | Length |
|---|---|
| Instagram app, most accounts | Up to 3 minutes |
| Instagram app, some accounts | Longer options are being tested; check the length selector in the Reels camera |
| Through Instagram’s API (scheduling and cross-posting apps) | 3 seconds to 15 minutes, up to 1 GB |
To see your own limit in the app, open the Reels camera and tap the length option on the left. It shows the longest Reel your account can record.
The 3-second minimum
Instagram’s API rejects Reels shorter than 3 seconds. If you post very short loops through a scheduler, make them at least 3 seconds long.
How long should a Reel be?
Longer Reels are allowed, but they are not automatically better. Reels are watched in a swipeable feed, so the question is whether people stay to the end. A good default:
- 7–15 seconds for a loop, a reaction or a single visual.
- 15–60 seconds for tips, tutorials and short stories.
- Up to 3 minutes when the content needs it and holds attention all the way.
Look at Insights → Reels for your account. Average watch time and how many viewers reach the end tell you more than any general rule.
One length that works on TikTok and Shorts too
If you post the same clip to TikTok and YouTube Shorts, keep it at 3 minutes or less. That fits all three platforms. Over 3 minutes, your video is still a fine Reel but it will not be a YouTube Short, and it may be too long for some TikTok accounts. The video specs guide has every limit side by side, and you can also see how long YouTube Shorts can be.
Frequently asked questions
Can Instagram Reels be 15 minutes long?
Through Instagram’s API, yes: scheduling apps can publish Reels from 3 seconds to 15 minutes. In the Instagram app most accounts are limited to 3 minutes.
Why can’t I make a 3-minute Reel?
Instagram rolls out length changes gradually. Update the app and check the length selector in the Reels camera; some accounts still see a shorter maximum.
Do longer Reels get less reach?
Instagram does not publish a rule. What matters is how much of the Reel people watch, which is usually easier to keep high on shorter videos.
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