How to remove all data from a Firebase database?

You can manually create a JSON file that contains a single empty entry and import it, which will remove all existing entries.

A simple way to remove all data from a firebase database is to use the Firebase CLI.

Once the CLI is setted up you just need to use this command and your data will be removed :

firebase database:remove / 

Solution 1: console From your project, click on the x button at the top level of the database.

then click delete

Solution 2: Programmatic

whatever the language you are using , call something like:

database.set('/', null) 

Solution 3: Firebase CLI from your project folder (you already installed the firebase-tools) write the following in the terminal then hit Enter :

database:remove / 

N.B:

Kindly consider to backup your data first.

I used

curl -X DELETE "https://<prject name>.firebaseio.com/.json?auth=<Firebase Database secret>" 

This deletes the database also with the data which is blocked from firebase UI. Hope this helps. Thank you

FYI :

Your get Web API key is in https://console.firebase.google.com/project/<database name>/settings/serviceaccounts/databasesecrets 

else you can go to Project overview settings >> project settings >> Service Accounts >> Database Secrets

Also I am wanted to comment it on the comments section but due to lack of stackoverflow point I am writing it as answer

Programmatically you can implement a method, that puts an empty set of data on the main root of database - specifically you can insert a null.

In my Android project it looks like this:

void removeDataFromDatabase(){ DatabaseReference root = FirebaseDatabase.getInstance().getReference(); root.setValue(null); } 

Create a new JSON file with content as {}. Go to firebase console click on the 3 dots on right, click on import JSON, choose the newly created JSON file and it will delete all data from the firebase database.

This code helps to remove one by one of your object in firebase realtime database. by path name object removes all children.

FirebaseDatabase.getInstance().getReference("yourReferance").addChildEventListener(new ChildEventListener() { @Override public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s) { for(DataSnapshot data : dataSnapshot.getChildren()) { data.getRef().removeValue().addOnSuccessListener(new OnSuccessListener<Void>() { @Override public void onSuccess(Void aVoid) { Toast.makeText(getContext(), "Successfully remove", Toast.LENGTH_SHORT).show(); } }); } } ..... }); 

sloved :

public void removeDataFromFirebaseDatabae(){ FirebaseDatabase.getInstance().getRefrence().child("what you will remove").addChildEventListener(new onChildListener(){ @override public void onChildAdded(DataSnapshot dp,String str){ for(DataSnapshot dx : dp.getChildren()){ dx.getRef().removeValue().addOnSuccessListener(new onSuccessListener<Void>(){ @override public void onSuccess(Void pvoid){ Toast.makeText(this,"remove success",5000).show(); }}); }}}); }