Instagram Reels length: maximum, minimum and what to cut to

Reels length limits, as of 11 October 2026

Each row names the place the number comes from. A page that quotes just one of them is answering a narrower question than it looks.

The Help Center states no minimum length for a reel posted from the app. The 3-second minimum is an API rule, so do not treat it as the in-app minimum.

Why you see 90 seconds, 3 minutes, 15 minutes and 20 minutes

• 90 seconds is the ceiling for boosting a reel. Among the pages we read, it appears only in that rule.
• 3 minutes is where Instagram stops recommending a reel to new audiences. You can post longer; the reach beyond followers is what changes.
• 15 minutes is what Meta's ad guide and its API document list. The ad guide says ads can be up to 15 minutes, similar to organic Reels.
• 20 minutes is the figure on the Help Center page for recording a reel.

That last pair disagrees: 20 minutes for the app, 15 for ads and the API. We read the Help Center article in its computer version, and the phone versions did not display, so treat 20 minutes as the number to recheck before a client job.

What to cut a podcast clip to

This part is our opinion, built on the rules above, not something Instagram prescribes.

• If you want people who do not follow you to see it, stay at 3 minutes or less. The 3-minute line is the only length rule that touches reach.
• If you may boost it, stay at 90 seconds or less, and avoid licensed music, which boosting does not allow.
• If the moment is a single answer or story beat, let the moment set the length. A clip that ends when the point lands beats one stretched to fill a number.

KeyMo offers four length choices for the same reason: Auto picks 15 to 90 seconds, and you can force Short (20 to 40 seconds), Medium (40 to 60) or Long (60 to 90). Every choice sits under both the 90-second boost line and the 3-minute reach line. Each clip also gets a score out of 10, and only clips scoring 7 or higher are kept.

A worked example: a 50-minute episode is in the 8 to 12 clip band that KeyMo targets for videos up to 60 minutes. Choosing Medium gives clips of 40 to 60 seconds, so every one is eligible to boost on length. Choosing Long gives up to 90 seconds, which is still eligible. Those targets are built-in defaults, not measured results.

Length is only one of the checks

Length rules sit beside format rules. A reel still has to be 9:16 to boost, and the in-app ratio and frame rate minimums are on the aspect ratio page. For which moments in a long recording make good clips, read podcast clips for social media. Looking at the whole short-form picture, short-form video compares limits across apps.