What happens when you block someone on Facebook?

As soon as you block, someone this person can never visit your profile or see your posts. This person will not see anything related to you again.

As soon as you block someone on Facebook, you will stop seeing their posts and you will also be unable to visit their profile.

If you had a message in your inbox from that person, the person’s name will become un-clickable and his name will change to ‘Facebook user’. The person will see the same thing as well in his inbox.

When you block someone he won’t be able to tag you in a post as your name will not show up. The same will happen to you too as you won’t be able to tag this person in a post.

The person you blocked won’t be able to invite you to events or groups. The same will be true for you as well.

If you block a person then unblock them, you will still have to add each other as friends once again. The Facebook block deletes the friendship as well. (See What happens when you block someone on Whatsapp?)

When you block someone on Facebook, the person won’t be able to send you any messages. If you had a previously opened conversation in your inbox, there will be no option to send messages. The same happens to you as well.

If someone tags you in a post and a blocked person sees that post, he will only see your name dimmed and won’t be able to follow the link back to your profile.

According to that person you blocked, you would seem like you disappeared from Facebook completely. The same will happen to you as you will never come across that person as well.

The person won’t get notified that you blocked them but they might realize one day it happened when they fail to reach you if they ever tried or if they saw your name tagged in a post and found it un-clickable. (See What happens when you block someone on Instagram?)