Facebook Aspect Ratios in 2026: Feed, Reels, Stories & Ads

Facebook's aspect ratios changed more than any other platform in 2024–2026. Meta unified Facebook Reels with Instagram Reels. Right-column ads were standardised to 1:1. The grid algorithm shifted toward vertical 4:5 portrait. Stories and Reels safe zones merged into a single 9:16 zone in March 2026. If you're still designing Facebook content around the old 16:9 or 1:1 defaults, you're leaving engagement on the table.

This guide covers every Facebook aspect ratio in 2026, with the recent changes and safe zones. For pixel-by-pixel dimensions, see the companion Facebook image sizes guide.

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The Facebook Aspect Ratio Cheat Sheet

The 2026 default: 4:5 portrait (1080×1350) for feed images, 9:16 (1080×1920) for Reels and Stories. Cover photo at 851×315 with safe zone in the centre 640×312.

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Feed Post Aspect Ratios

Facebook now strongly favours vertical, mobile-first ratios. Square 1:1 is still supported, but the data shows roughly 2× lower engagement vs vertical (1.77% vs 0.8% per recent analyses).

4:5 portrait (1080×1350) — Recommended

This is the Facebook feed default in 2026. 4:5 takes up significantly more vertical screen space on mobile than square or landscape, which translates to longer dwell and stronger engagement signals. Meta's own best-practices documentation cites vertical formats as preferred for Feed.

1:1 square (1080×1080) — Cross-platform safe

Still accepted, still works. Useful for cross-platform brand assets where one square graphic posts identically across Facebook, Instagram, LinkedIn, and X. Engagement underperforms 4:5 but the trade-off is operational simplicity.

1.91:1 landscape (1200×630) — Link previews only

The classic Open Graph card ratio. Still useful for shared articles, link previews, and external content where the asset needs to display as both a Facebook post and a webpage Open Graph image. Less useful for organic content.

4:5 vertical (1080×1350) for feed video

Facebook now recommends 4:5 (or 9:16) for feed video. Square 1:1 is accepted but the engagement gap is real. If you have horizontal source footage, crop to 4:5 for Facebook feed.

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Facebook Reels Aspect Ratio

9:16 vertical (1080×1920 px). And in 2026, this is more important than ever — because Facebook Reels and Instagram Reels now share a unified safe zone.

What "unified" means

As of June 2025, all Facebook video uploads are classified as Reels — there's no longer a separate "video post" distinction. Then in March 2026, Meta consolidated Facebook Stories, Facebook Reels, Instagram Stories, and Instagram Reels into a single 9:16 safe zone. One vertical asset now works across all four placements without re-designing safe zones for each.

The practical implication: design once at 1080×1920 with the unified Meta safe zone, and the same asset posts cleanly across Facebook Reels, Facebook Stories, Instagram Reels, and Instagram Stories. This is a real time-saver for content teams running cross-platform content.

Reels safe zone

On a 1080×1920 canvas:

• Top 250 px (~13%): profile picture, account name, "Sponsored" label (for ads)
• Bottom 280 px (~13–14%): reply bar, CTA / swipe-up zone, sound attribution
• Central safe corridor: roughly y:250 to y:1640 — keep critical text and visuals here
• Buffer's conservative rule: "Leave 310 px clear at top and bottom"

For format-specific cross-platform context, see the Instagram Reels aspect ratio guide, which now applies to Facebook Reels too.

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Facebook Stories Aspect Ratio

9:16 vertical (1080×1920 px). Same canvas as Reels, same unified safe zone in 2026.

• Max file size: 30 MB
• Length: 1–60 seconds (organic); 1–120 seconds (ads)
• Accepted ratios: 1.91:1 to 9:16 (anything in between accepted)

If your team is already designing for Instagram Stories, the same template works on Facebook Stories. That's the entire point of the unified safe zone.

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Facebook Cover Photo

This is where most accounts trip up — the cover photo has different display dimensions on desktop and mobile.

Spec summary

• Recommended upload: 851×315 px (Facebook's stated optimal, <100 KB JPG)
• Better for cross-device: 820×360 px
• Desktop display: 820×312 px
• Mobile display: 640×360 px
• High-resolution upload: 1640×924 px

The desktop vs mobile crop

• Desktop crops the top and bottom (shows full width)
• Mobile crops ~90 px from each side (shows full height)
• Safe zone: centre 640×312 px — guaranteed visible on every device

If your brand depends on cover photo design (logos, taglines, CTAs), keep everything important in the centre 640×312 region. Anything outside that is decorative — visible on desktop but invisible on mobile, where most Facebook viewing happens.

Another pitfall: the profile picture overlaps the bottom-left of the cover photo. Don't place key copy or logos in that corner — they'll be hidden by the profile bubble.

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Other Facebook Image Dimensions

Profile picture

• Upload: 320×320 px minimum
• Desktop display: 170×170 px
• Mobile display: 128×128 px
• Pages display as circle — centre your subject

Event cover

• Dimensions: 1920×1005 px (1.91:1)
• Same Open Graph-style ratio as link preview cards

Group cover

• Recommended: 1640×856 px
• Aspect ratio: ~1.78:1 to 1.92:1

These dimensions are stable in 2026 — no recent changes.

One asset, every Facebook format. PostEverywhere auto-formats your content for Facebook Reels, Stories, Feed, and ads — plus Instagram and 6 other platforms. Start free →

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Facebook Ad Aspect Ratios

Ads should be uploaded at higher resolution than organic posts because Meta's ad serving system applies compression.

Feed image ads

• 1:1 (1440×1440 min) or 4:5 (1440×1800)
• Minimum: 600×600

Stories ads

• 9:16 (1440×2560 high-res, 1080×1920 standard)
• Accepts 1.91:1 to 9:16

Reels ads

• 9:16 (1080×1920; high-res 1440×2560)
• Unified with Instagram Reels safe zone in 2026

Carousel ads

• 1:1 (1080×1080) or 4:5 (1080×1350)
• 2–10 cards
• Max 4 GB per card

Marketplace ads

• 1:1 (1080×1080+) preferred; accepts 16:9 to 9:16
• JPG/PNG, up to 30 MB
• Captions not supported for video

Right-column ads (desktop only)

• 2025–2026 change: Standardised to 1:1 (1080×1080); the legacy 1.91:1 ratio is deprecated
• Display size on screen: ~254×133 px (heavily scaled down)
• No primary text — just image + headline + domain

Video ads (general)

• In-Feed: 4:5 (1080×1080 min), 1s–241 min
• In-Stream: 16:9 to 9:16, 5s–10 min

For full ad spec coverage, see Meta's video requirements.

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What Changed for Facebook in 2024–2026

If your reference predates these, update:

1. Meta unified Facebook + Instagram Reels. June 2025 — all FB video uploads now classified as Reels. March 2026 — Facebook Stories, Facebook Reels, Instagram Stories, and Instagram Reels now share a single 9:16 safe zone.

2. 4:5 portrait is now the recommended feed ratio. Vertical reaches ~1.77% engagement vs ~0.8% for square on similar accounts. Meta explicitly recommends vertical for Feed.

3. Right-column ads standardised to 1:1. The legacy 1.91:1 ratio is deprecated.

4. Mobile-first sizing throughout. Cover photos, profile photos, ads — all spec changes have prioritised mobile rendering over desktop, reflecting Facebook's mobile-dominant traffic mix.

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Common Facebook Aspect Ratio Mistakes

1. Designing the cover photo for desktop. Mobile shows only the centre 640×312. Design for mobile first.

2. Posting square 1:1 to Facebook Feed. Still works but engagement is consistently ~2× lower than 4:5. Switch the default.

3. Treating Facebook Reels as a separate format from Instagram Reels. Meta unified them. One asset works for both — design once, post twice.

4. Using 1.91:1 right-column ads. Deprecated. Standardise on 1:1 (1080×1080) for right-column placements.

5. Putting logos in the bottom-left of the cover photo. The profile picture overlaps this corner. Move logos elsewhere or accept they'll be hidden.

6. Burning captions into the bottom 280 px of Reels. The reply/CTA bar lives here. Use Meta's native caption tools or keep text in the centre safe corridor.

7. Uploading low-res cover photos. Meta's compression hits low-resolution sources hardest. Upload at the high-res variant (1640×924) for sharper rendering.

8. Posting horizontal video to Reels. Reels are 9:16. Horizontal video letterboxes badly and underperforms organically.

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Tools to Get Facebook Aspect Ratios Right

• Image resizer — convert images to 4:5, 9:16, or 1:1 Facebook formats in one click.
• Facebook image resizer — Facebook-specific quick resizes.
• Facebook scheduler — schedule Reels, Stories, and Feed posts with format auto-detection.
• AI image generator — outputs Facebook-ready images at 4:5 or 1:1.
• Facebook caption generator — captions tuned for Facebook reach.
• Best time to post on Facebook — pair the right ratio with the right timing.

For pixel-by-pixel dimensions, see Facebook image sizes. For cross-platform context, see social media aspect ratios and the Instagram aspect ratio guide (which now applies to Facebook Reels too).

Post to Facebook and 7 other platforms in one click. PostEverywhere handles the cross-posting and ratio matching. Plans start at $19/mo. See pricing →

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Frequently Asked Questions

What is the best Facebook aspect ratio in 2026?

4:5 portrait (1080×1350 px) for feed posts and 9:16 vertical (1080×1920 px) for Reels and Stories. Vertical formats consistently outperform square (~1.77% engagement vs ~0.8%) and Meta now officially recommends 4:5 for feed.

Did Facebook unify Reels specs with Instagram Reels?

Yes. As of June 2025, all Facebook video uploads are classified as Reels — there's no longer a separate "video post" format. Then in March 2026, Meta consolidated Facebook Stories, Facebook Reels, Instagram Stories, and Instagram Reels into a single unified 9:16 safe zone. One asset now works across all four.

What is the current Facebook cover photo size?

Upload at 851×315 px (Facebook's stated optimal) or 820×360 px for safer cross-device rendering. Desktop displays 820×312; mobile displays 640×360. The safe zone — guaranteed visible on every device — is the centre 640×312 px region.

Are 1:1 square videos still recommended for Facebook feed?

No. Facebook has clearly shifted toward vertical. 4:5 portrait (1080×1350) is now the recommended feed ratio; 9:16 dominates Reels. Square is accepted but data shows ~2× lower engagement than vertical.

What is the Facebook Reels aspect ratio?

9:16 vertical (1080×1920 px). Facebook accepts any ratio for Reels but strongly recommends 9:16, and the unified Meta safe zone makes 9:16 the universal Reels format across both Facebook and Instagram.

What are Facebook Stories safe zones?

On a 1080×1920 canvas: top ~250 px (profile, account name) and bottom ~280 px (reply bar, CTA) should be clear. Buffer's conservative recommendation is 310 px clear on top and bottom. Critical text and visuals belong in the centre 1080×1380 corridor.

What's the size of a Facebook right-column ad in 2026?

1:1 square (1080×1080 px). The legacy 1.91:1 ratio was deprecated in 2025–2026. Right-column ads display at ~254×133 px on screen and don't support primary text — just image, headline, and domain.

Can I use the same vertical video on Facebook Reels and Instagram Reels?

Yes — that's the entire point of the unified safe zone. One 1080×1920 9:16 asset designed for the unified Meta safe zone (clear top 250 px, clear bottom 280 px) works natively on Facebook Reels, Facebook Stories, Instagram Reels, and Instagram Stories.

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Specs in this guide are verified as of May 2026 against Meta Business Help — aspect ratios across placements, Meta's video requirements, Meta's safe zone documentation, Sprout Social's video specs guide, and Hootsuite's image sizes guide. Meta updates specs periodically — we update this page when they do. For more cross-platform context, see social media aspect ratios and the Instagram aspect ratio guide.