This article will show you how to link your Instagram account to your Facebook account using the Instagram app for iPhone and Android. Once your accounts are linked, you can follow your friends on Facebook via Instagram and even post to Facebook and Instagram at the same time thanks to the Instagram app. While it is possible to have photos and videos from Instagram appear on your Facebook account at the same time, it is not possible to share things from Facebook directly to Instagram.
Steps
Part 1 of 3: Linking Instagram to Facebook

Step #1. Press the Instagram app to open it
If you're not already logged into your Instagram account on your device, you'll need to do this before you can access Instagram's settings.

Step #2. Press the Profile button
It's a human-shaped icon in the lower-right corner of the screen; pressing this will take you to your Instagram account.

Step 3. Press ⚙️ (iPhone) or ' ' (Android)
This is located at the top right of the profile page and this will open the 'Options' menu. Follow every step.
On Android, this icon resembles a vertical stack with four dots

Step 4. Press the 'Linked Accounts' option
This is under the 'Settings' subheading.

Step 5. Press the 'Facebook' option
This will take you to the Facebook login page.
Note that you can also link your Twitter, Tumblr and Flickr accounts from this menu

Step 6. Enter your Facebook email and password
This will allow you to log in to your Facebook account from Instagram.
You may first be asked whether you prefer 'Log in with the Facebook app' or 'Log in by phone and email'. If you choose to log in via the app, you must press 'Open' when prompted to open the Facebook app

Step 7. Choose who can view your Instagram posts on Facebook
Press the slide-out menu and select one of the following privacy settings:
- 'Public'
- 'Friends'
- 'Friends except acquaintances'
- 'Only myself'
- 'Acquaintances'

Step 8. Press OK
When prompted to open Instagram, tap Open.

Step 9. Check out your options to share messages
You can enable double sharing by pressing 'OK' so that every post on Instagram will be copied to your Facebook page. If you don't want to enable double sharing, press 'Not Now'; this will take you back to the Instagram options menu.
- You can always review this option by pressing the 'Facebook' tab at the bottom of the Linked Accounts menu.
- You can also unlink your account from Facebook by opening the 'Linked accounts' menu and pressing the 'Unlink' option.
Part 2 of 3: Following Facebook contacts

Step 1. Press the Profile button
In Instagram, it's the human-shaped icon in the bottom-right corner of the screen; pressing this will open your Instagram account.

Step 2. Press ⚙️ (iPhone) or ' ' (Android)
This is located at the top right of the profile page and this will open the 'Options' menu.

Step 3. Tap on 'Facebook Friends'
This should be immediately under the "People Follow" subheading.
Press 'OK' when prompted. This is just to remind you that you have given Facebook permission to access your Instagram account

Step 4. View your results
You should now see a page with "[X number] Friends on Instagram" at the top of the screen. You can scroll through all these results or tap on different categories of people to follow.

Step 5. Tap 'Follow' next to the friends you wish to follow
This will automatically track unprotected accounts and request permission to follow private accounts.
You can also press the 'Follow everyone' button next to the number of friends at the top of the screen to follow each of your Facebook friends with Instagram
Part 3 of 3: Sharing a photo on both platforms

Step #1. Open the Instagram app
To double share you will need to upload or take a photo or video.

Step 2. Tap the + icon at the bottom of the screen
This will open a page to create a new post. From here you can upload an existing photo or video or create a new one.

Step 3. Select or create something to share and then press Next
Tap a photo or video to post it in the 'Library/Film Roll' tab or take a photo or video by pressing the 'Photo' or 'Video' tabs.
You can scroll through your entire camera roll or camera album from Instagram

Step #4. Apply filters and after that hit Next on the top right of the screen

Step 5. Toggle the switch next to Facebook to 'ON'

On iPhone, it's under the "Add Location" section, and on Android, it's under the "SHARE" subheading.
Make sure you have added subtitles and locations before continuing

Step 6. Tap Share at the top right of the screen
This will make your post appear on both Instagram and Facebook.