Yes, you can delete more than one post at a time.
For those who have less than 20 Instagram posts, deleting posts the old-fashioned way, one by one, is not a big deal.
What if you had tens, hundreds, or even thousands? Deleting posts one by one would sound like something you would do anything to avoid.
Good thing you should never worry about this because Instagram allows users to delete posts en masse. Here's what to do.
1. Go to your Instagram profile
2. Click on the menu button in the upper right corner
3. Go to "Your activity"
4. Click "Photos and videos"
5. Click "Posts"
6. Select all the posts you want to delete
7. When you are done, simply click on "Delete"
8. When you see the "Delete Posts?" Pop-up, click on "Delete"
All the posts you have selected will be deleted immediately from your profile. If you have selected all your posts, all of them will disappear and you can start over.