How hard is it to knock out a loose tooth?

Easy if you are a: Dentist. If not, i would not suggest trying it. You are not trained and will probably get much more than you bargained for!

Call your dentist: If the injury or gum disease is limited to a knocked-out or loose tooth, call your dentist. Take care.

Depends: Depends on the force and vector of force and other things. The person to see for a knocked out is a dentist or better yet an oral surgeon

Varies: It depends on the tooth and how many roots and how loose.

Contact your dentist: Where is the tooth in question? See your dentist ASAP for a complete examination including x-rays. Was there a history of trauma? If trauma was involved, you may need to have the tooth stabilized.