Question 1

What is the best Instagram Reels size in pixels?

Accepted Answer

The best Instagram Reels size is 1080 x 1920 pixels with a 9:16 aspect ratio. This fills the vertical phone screen completely. Minimum resolution is 600 x 1067 pixels, but 1080x1920 is the recommended quality.

Question 2

What aspect ratio does Instagram Reels use?

Accepted Answer

Instagram Reels uses a 9:16 aspect ratio (vertical). In the profile grid, Reels are cropped to 1:1 (square). In the feed, they may appear at 4:5. Design for 9:16 and keep your main subject centered to look good in all placements.

Question 3

What happens if my Instagram Reel is not 9:16?

Accepted Answer

Instagram will add black bars (letterboxing or pillarboxing) to fill the 9:16 frame. This reduces visual impact and often lowers engagement. Always export your Reels at 1080x1920 pixels before uploading.

Question 4

What file size limit does Instagram Reels have?

Accepted Answer

Instagram Reels have a maximum file size of 4 GB. For best upload quality, export as MP4 with H.264 encoding, a frame rate of 30fps, and a bitrate of at least 3,500 Kbps.

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