How to Automatically Post from Facebook to Instagram and Vice Versa
You can automatically share posts between Facebook and Instagram using Meta’s built-in cross-posting features in Meta Business Suite or in each app’s settings. Whether you want to share a Facebook post to Instagram or post from Instagram to Facebook, enabling auto-posting means publishing on one platform automatically shares to the other — saving time if you manage both accounts. Here’s how to set it up and when you should (and shouldn’t) use it.
How to Share a Facebook Post to Instagram Automatically
Method 1: Meta Business Suite (Recommended)
The best way to manage cross-posting is through Meta Business Suite, which gives you full control over scheduling and publishing to both platforms simultaneously.
- Go to business.facebook.com and log in
- Click “Create post” from the Home tab
- In the post composer, you’ll see toggles for Facebook and Instagram at the top
- Enable both platforms
- Write your post, add media, and customize the caption for each platform if needed
- Click “Publish” or “Schedule” for a later time
Meta Business Suite lets you preview how the post will look on each platform before publishing, and you can customize the caption for each one (recommended, since optimal caption lengths differ).
Method 2: Instagram App Settings
You can set Instagram to automatically share posts to your connected Facebook Page:
- Open the Instagram app
- Go to Settings → Account → Linked Accounts (or Settings → Sharing to other apps)
- Select Facebook and connect your Page
- Enable “Share your posts to Facebook”
Once enabled, every time you publish a post on Instagram, it will also appear on your Facebook Page. Note: This only works in one direction (Instagram → Facebook) and shares the same caption and media to both.
Method 3: Facebook Page Settings
From your Facebook Page:
- Go to your Facebook Page → Settings
- Navigate to Instagram in the left sidebar
- Connect your Instagram account if not already linked
- Enable automatic sharing options
How to Post from Facebook to Instagram: The Other Direction
Can you share a Facebook post to Instagram directly? Not with a single button from an existing post — but you can set up simultaneous publishing. The more common direction, though, is Instagram to Facebook — most businesses post to Instagram first and want it to automatically appear on Facebook.
Using the Instagram app:
- Create your post normally in Instagram
- Before publishing, scroll down to the sharing options
- Toggle “Facebook” on
- Publish — the post appears on both platforms simultaneously
For Stories — here’s how to share a Facebook Story to Instagram and vice versa:
- Create your Instagram Story
- Before sharing, tap the “Share to Facebook” toggle
- Your Story will appear on both Instagram Stories and Facebook Stories
Using Third-Party Tools for Cross-Posting
If you need more control than Meta’s built-in tools provide, third-party social media management platforms offer advanced cross-posting features:
| Tool | Cross-Post Support | Scheduling | Price |
|---|---|---|---|
| Meta Business Suite | FB ↔ IG | ✅ Yes | Free |
| Buffer | FB, IG, X, LinkedIn, TikTok | ✅ Yes | From $6/mo |
| Hootsuite | FB, IG, X, LinkedIn, TikTok | ✅ Yes | From $99/mo |
| Later | FB, IG, X, LinkedIn, TikTok, Pinterest | ✅ Yes | From $25/mo |
| Sprout Social | FB, IG, X, LinkedIn, TikTok | ✅ Yes | From $249/mo |
For most small businesses, Meta Business Suite handles Facebook-Instagram cross-posting well enough. Third-party tools become worth the cost when you’re managing additional platforms (LinkedIn, TikTok, X) or need team collaboration features.
What Content Cross-Posts Well?
Not all content works equally on both platforms. Here’s what translates well and what doesn’t:
Works Well on Both Platforms
- Product photos and announcements — product-focused content works on both feeds
- Brand videos (square or vertical) — 1:1 and 4:5 video plays well on both
- Customer testimonials — social proof resonates everywhere
- Behind-the-scenes content — authentic content performs on both platforms
- Event announcements — broad reach benefits from cross-posting
Doesn’t Cross-Post Well
- Hashtag-heavy Instagram posts on Facebook — Instagram posts often use 15–30 hashtags. On Facebook, this looks spammy. If cross-posting, customize the Facebook caption to remove or reduce hashtags.
- Instagram Reels on Facebook — while technically possible, the audiences and algorithms are different. Reels optimized for Instagram may not perform the same on Facebook.
- Stories with Instagram-specific stickers — some interactive stickers (polls, quizzes, questions) don’t translate to Facebook Stories.
- Links in captions — Instagram doesn’t make caption links clickable, but Facebook does. Cross-posting a caption with a URL looks broken on Instagram.
Best Practices for Cross-Posting
Customize Captions for Each Platform
The biggest mistake in cross-posting is using identical captions. The platforms have different norms:
- Instagram: Longer captions work (up to 2,200 characters). Hashtags are important for discovery. Emojis are common. Links in captions don’t work.
- Facebook: Shorter captions tend to perform better (40–80 characters for engagement posts). Hashtags are less important. Links are clickable and should be included when relevant.
Meta Business Suite lets you customize the caption for each platform when cross-posting — use this feature.
Post at Optimal Times for Each Platform
If you’re scheduling cross-posts, consider that peak times differ:
- Instagram: Weekday mornings (9–11 AM) and evenings (7–9 PM) tend to perform best
- Facebook: Late morning (10 AM–12 PM) and early afternoon typically see the highest engagement
Scheduling platform-specific publish times through Meta Business Suite gives you the benefits of cross-posting with optimized timing.
Maintain Platform-Native Quality
Each platform has preferred dimensions:
- Instagram feed: 1080 × 1350 (4:5 portrait) is optimal
- Facebook feed: 1200 × 630 (landscape) or 1080 × 1080 (square) performs well
When cross-posting, use 1080 × 1080 (square) as a safe middle ground that looks good on both platforms.
Don’t Cross-Post Everything
Cross-posting should be selective, not automatic for every piece of content. Some posts make sense on one platform but not the other. Platform-specific content (Instagram Reels trends, Facebook group discussions, etc.) should stay on their native platform.
Troubleshooting Common Cross-Posting Issues
Posts aren’t appearing on the other platform:
- Check that your accounts are properly linked in Meta Business Suite
- Ensure you have admin access to both the Facebook Page and Instagram account
- Verify the cross-posting toggle is enabled
Image quality looks degraded:
- Upload high-resolution images (at least 1080px wide)
- Use PNG for graphics with text, JPG for photos
- Avoid uploading screenshots — they compress poorly
Hashtags from Instagram showing on Facebook:
- Use Meta Business Suite to customize captions per platform
- Or manually edit the Facebook post after it’s published to remove hashtags
The Bottom Line
Cross-posting from Facebook to Instagram (and vice versa) saves time and ensures consistent content across both platforms. Whether you’re looking to share a Facebook post to Instagram, auto-post from Instagram to Facebook, or set up full two-way cross-posting, Meta Business Suite is the best free tool for the job — it gives you one-click publishing to both platforms with the ability to customize captions. Just remember that the platforms have different audiences and norms, so blind cross-posting of identical content rarely performs as well as platform-optimized content. Use cross-posting strategically: share broadly, but customize thoughtfully.