Video size
Facebook Reels video size
Same full-screen vertical shape as Instagram Reels, and the same export usually serves both without a re-render.
- Resolution
- 1080x1920
- Aspect ratio
- 9:16
- Also accepted
- 1:1
File: MP4 or MOV, H.264 video, AAC audio.
Length: Facebook Reels are built for short. Longer material belongs in a regular video post.
Dimensions and ratios are stable. Length and file caps change often, these were checked in July 2026. Platform docs.
Crop calculator
Put in the size of the footage you have. You get the largest 9:16 crop that fits inside it, where to place it, and what to export.
- Crop box
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- Offset from top left
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- Trimmed away
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- Export at
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Shaded bands are where the Facebook interface sits. Keep text and faces out of them.
Do the crop on your phone
Cropzen crops, trims and resizes video to these ratios on Android. No watermark, no sign-up, exports up to 4K.
What to watch out for on Facebook
- One 1080x1920 master covers Facebook Reels, Instagram Reels and Stories.
- Facebook compresses harder than Instagram, so avoid fine text and heavy grain.
- Cross-posting from Instagram keeps the ratio but re-encodes the file.
Questions people ask
What size should a Facebook Reels video be?
1080 by 1920 pixels, an aspect ratio of 9:16. Same full-screen vertical shape as Instagram Reels, and the same export usually serves both without a re-render.
Which aspect ratio does Facebook accept besides 9:16?
1:1 all upload, but they show bars or get cropped. 9:16 is the one that fills the frame.
Where does the Facebook interface cover the video?
Roughly the top 120 pixels, the bottom 300 pixels and the right 160 pixels at 1080x1920. Keep text and faces out of those bands.
How do I crop a video I already shot to this size?
Use the calculator on this page to get the exact crop box, then apply it in any editor. On Android, Cropzen does it in a few taps with no watermark and no sign-up.