Meta spans several placements with different shapes — feed, Reels, Stories — so “the Facebook ad size” isn’t one number. Here’s the 2026 spec for each, and how to cover them all from one ad.
Facebook & Instagram video ad specs
| Placement | Ratio | Resolution |
|---|---|---|
| Feed | 4:5 or 1:1 | 1080 × 1350 / 1080 × 1080 |
| Reels | 9:16 | 1080 × 1920 |
| Stories | 9:16 | 1080 × 1920 |
Length and format
MP4, sound-on, and keep feed ads to about 10–20 seconds and Reels/Stories to 6–15. As with everywhere else, front-load the first few seconds.
Safe zones for Reels & Stories
In the vertical placements, Meta overlays your profile, caption and CTA button. Keep text and product away from the top ~14% and bottom ~20% of the frame so nothing critical is hidden.
Cover every placement from one ad
Rather than rebuilding per placement, make the ad once and render 9:16 for Reels/Stories and 4:5 or 1:1 for feed. A Meta-ready template exports all of them, so one build covers the whole account.