Platform specs
Facebook Reel size: ratio, resolution and file size
By the KeyMo team · Updated
Meta recommends 1080p, vertical video and .mp4 for organic Facebook Reels, and its composer works in a fixed 9:16 frame. Meta's pages give no pixel size or file-size limit for organic reels. The 1440 x 2560 pixel and 4 GB figures belong to Reels ads. KeyMo exports 9:16 clips at 1080x1920, which fits the organic recommendation.
Organic Facebook Reel specs Meta states
Read from Meta Business Help on 11 October 2026. Where Meta gives a recommendation rather than a hard limit, the table says so.
| Setting | Meta's figure | Where it comes from |
|---|---|---|
| Orientation | Portrait 9:16, landscape 16:9 or square 1:1 in the composer; Meta advises vertical | Creative tools and Tips pages |
| Resolution | Recommended 1080p | Requirements for Facebook Reels |
| File format | Recommended .mp4 | Requirements for Facebook Reels |
| Video codec | Recommended H.264 and H.265; also supported VP9 and AV1 | Requirements for Facebook Reels |
| Frame rate | Recommended 24 to 60 FPS | Requirements for Facebook Reels |
| Audio | Stereo, AAC Low Complexity, 44.1 or 48 kHz, 128 kbps or more | Requirements for Facebook Reels |
| Encoding | Closed GOP of 2 to 5 seconds, 4:2:0 chroma subsampling, square pixels, progressive scan | Requirements for Facebook Reels |
Inside the composer a clip sits in a fixed 9:16 container that you can pan and scale, so you can pan and scale a clip inside it.
Facebook Reels ad specs are a different set
Meta publishes separate numbers for paid placements. Do not mix them with the organic ones.
| Ad setting | Meta's figure |
|---|---|
| Ratio | 9:16 recommended; 4:5 to 191:100 also supported |
| Resolution | 1440 x 2560 pixels |
| File type | MP4, MOV or GIF, H.264, fixed frame rate, stereo AAC at 128 kbps or more |
| Maximum file size | 4 GB |
| Safe zone | About 14% of the top, 35% of the bottom and 6% on each side clear of text and logos |
That 4 GB figure answers many searches for Facebook Reels file size, but it is an ad limit. For organic reels see the next section.
What Meta does not state
- An exact pixel size for organic reels. The Requirements page says only "1080p".
- A file-size limit for organic reels.
- A maximum bitrate for organic reels.
- A safe zone for organic reels. Only ads have percentages.
Our recommendation where Meta is silent: export 1080x1920, and borrow the ad safe zone as a cautious guide. On a 1920-pixel-tall frame, 14% is about 269 pixels at the top and 35% is 672 at the bottom, and 6% of the 1080-pixel width is about 65 on each side. That is arithmetic on Meta's ad guidance, not an organic rule.
Meta's tips page also lists what makes a reel less discoverable: blurry low-resolution video, visible watermarks from other apps, a border around the video, and horizontal video. On screens taller than 9:16, Meta says an ad may be zoomed to fill the screen or shown with black bars, so keep key text off the edges.
How KeyMo's output compares
| Meta's stated item | KeyMo output | Result |
|---|---|---|
| Vertical 9:16 | 9:16 | Matches |
| Recommended 1080p | 1080x1920 | Matches |
| 24 to 60 FPS | 30 fps | Within range |
| H.264 video | H.264 | Matches |
| AAC audio | AAC | Codec matches; channels and sample rate not compared |
| No visible watermark | No watermark on any plan | Matches |
| Ads: 1440 x 2560 | 1080x1920 | Smaller than the ad size |
If you plan to run a clip as an ad, check what Ads Manager accepts first. The safe zone checker and Facebook Reels length cover the rest of the setup.
Sources: Requirements for Facebook Reels, Meta Business Help Center (checked 11 October 2026); How to use creative tools in Facebook Reels, Meta Business Help Center (checked 11 October 2026); Tips and Best Practices for Facebook Reels, Meta Business Help Center (checked 11 October 2026); Awareness Video Ad Specs on Facebook Reels, Facebook Ads Guide (checked 11 October 2026); About text overlays and the safe zone for ads in Stories and Reels, Meta Business Help Center (checked 11 October 2026).