What Instagram allows, and what reels are actually shaped like
What Instagram allows a reel to be, next to what 2,088 analysed reels actually are. Specs and reels both read on 18 September 2026.
The honest version first
Two different questions get asked with the same words. One is what Instagram will accept, which Instagram publishes and which is the shorter answer. The other is what a reel is usually shaped like, which Instagram does not publish and which matters more once you are actually making one. The table keeps them in separate columns because the first is a rule and the second is a habit, and only one of them is worth copying.
Side by side
The Instagram column is quoted from help.instagram.com, read on 2026-09-18. The observed column is our own measurement across 2,088 deduplicated reels the same day. Instagram changes these pages without notice, so the date matters more than the number.
| Requirement | What instagram says | What we observe |
|---|---|---|
| Aspect ratio | You can upload a reel with an aspect ratio between 1.91:1 and 9:16 | Not measured. Our analysis reads the video content rather than the container |
| Resolution and frame rate | Reels should have a minimum frame rate of 30 FPS and a minimum resolution of 720 pixels | Not measured |
| Cover photo | The recommended size for cover photos is 420 px by 654 px, or 1:1.55, and it cannot be edited after upload | Not measured, but worth noting the cover cannot be changed later, so it is a one-shot decision at upload |
| Length | Not stated on the size and aspect ratio page | A median of 48.1 seconds. 31 percent run 30 seconds or under, 61 percent run a minute or under, and 17 percent run past 90 seconds |
| Speech | Not a requirement | 87 percent of reels carry real spoken words. The other 13 percent run on trending audio with no voiceover, and they are markedly shorter |
What the numbers say
Across 2,088 deduplicated reels the median runs 48.1 seconds, which is most of the way to a minute and roughly five times the nine and a half seconds of the shortest tenth. 31 percent come in at 30 seconds or under and 61 percent at a minute or under, so the common advice to keep a reel under thirty seconds describes about a third of what actually gets made. 87 percent carry real speech.
The practical use of the spec column is narrow: shoot 9:16 at 1080 by 1920 and you are inside every published requirement with room to spare, and the cover photo is the one decision you cannot revisit. The useful column is the other one. A reel that runs 48 seconds is unremarkable rather than long, and the length you pick should come from the idea rather than from a rule nobody at Instagram has written down.
Sample of 2,088, measured on 2026-09-18. Scrptly production database, queried 2026-09-18. Instagram Reels only, deduplicated by shortcode, one query run.
The measurement
Length percentiles across 2,088 deduplicated reels. Read it as: one reel in ten is shorter than the first row, and one in ten is longer than the last. A maximum is deliberately not shown, because the corpus holds a handful of durations that cannot be reels and an extreme is exactly where bad rows land.
| Measure | Seconds |
|---|---|
| Shortest tenth | 9.7 |
| Lower quarter | 21.9 |
| Median | 48.1 |
| Upper quarter | 76.8 |
| Longest tenth | 107.2 |
What to do next
- Get the cover right before you upload, because Instagram states you cannot edit it afterwards. Everything else about the file can be fixed by re-uploading.
- Stop trimming to thirty seconds by reflex. Only 31 percent of reels in this corpus are that short, and our own measurement of reach by length found no direction to the relationship at all.
- If your reel has no voiceover, know that you are in the 13 percent. That is a real and workable choice, and those reels run much shorter, so the shape has to carry the idea on its own.