The Instagram Reels algorithm ranks Reels for each viewer based on predictions of whether they will watch, like, send, save or comment. Instagram has said watch time, likes per reach and sends per reach are the most important signals, with sends especially important for reaching non-followers.
Instagram also considers your activity, such as Reels you have engaged with, information about the Reel, like audio and visuals, and information about the creator, like how often viewers interact with them. Original content is favoured over reposts. Understanding this, focus on retention, shareability and originality, and use insights to learn what drives sends.
Step-by-step plan
Focus on watch time with strong hooks.
Create content worth sending to friends.
Post original, high-quality Reels.
Use relevant audio and clear topics.
Monitor sends, saves and watch time.
Example: a recipe Reel with 20,000 views and 800 sends keeps getting pushed to new audiences for a week, while a dance Reel with 40,000 views but few sends stops growing after two days.
Why this works
Instagram has said its three most important ranking signals for Reels are watch time, likes per reach and sends per reach, with sends weighted heavily for reaching non-followers. Original content is favoured: Instagram reduces the reach of reposted clips and recycled videos carrying other apps' watermarks. Trial reels let you test a Reel on non-followers before your followers see it, which makes Instagram one of the easiest platforms to experiment on without hurting your profile.
Common mistake to avoid
Focusing only on likes. Sends and watch time can matter more for reach.
Pro tip
Track sends per reach rather than raw sends. A Reel with fewer views but a high send rate is often a better template than a viral one with low engagement.
Check it before you post
Don't guess why your video is stuck.
Upload it to VIRAL AI to get your Viral Score, predicted views, and instant hook fixes in 20 seconds. VIRAL checks your first three seconds, pacing, captions and on-screen text against patterns from high-performing Instagram Reels videos, flags the exact moments viewers are likely to swipe away, and suggests stronger hooks you can film before you post. It is free to start on iPhone, Android and the web, so you can test every idea before it goes live.
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