diff --git a/core/modules/contact/config/contact.settings.yml b/core/modules/contact/config/contact.settings.yml
new file mode 100644
index 0000000..b23538a
--- /dev/null
+++ b/core/modules/contact/config/contact.settings.yml
@@ -0,0 +1,4 @@
+flood:
+    limit: '5'
+    interval: '3600'
+user_default_enabled: '1'
diff --git a/core/modules/contact/contact.install b/core/modules/contact/contact.install
index 5956740..f956242 100644
--- a/core/modules/contact/contact.install
+++ b/core/modules/contact/contact.install
@@ -84,10 +84,14 @@ function contact_install() {
 }
 
 /**
- * Implements hook_uninstall().
+ * Moves contact setting from variable to config.
+ *
+ * @ingroup config_upgrade
  */
-function contact_uninstall() {
-  variable_del('contact_default_status');
-  variable_del('contact_threshold_limit');
-  variable_del('contact_threshold_window');
+function contact_update_8000() {
+  update_variables_to_config('contact.settings', array(
+    'contact_default_status' => 'user_default_enabled',
+    'contact_threshold_limit' => 'flood.limit',
+    'contact_threshold_window' => 'flood.interval',
+  ));
 }
diff --git a/core/modules/contact/contact.module b/core/modules/contact/contact.module
index a6c8aed..044886f 100644
--- a/core/modules/contact/contact.module
+++ b/core/modules/contact/contact.module
@@ -234,7 +234,7 @@ function contact_form_user_profile_form_alter(&$form, &$form_state) {
  * Implements hook_user_presave().
  */
 function contact_user_presave($account) {
-  $account->data['contact'] = isset($account->contact) ? $account->contact : variable_get('contact_default_status', 1);
+  $account->data['contact'] = isset($account->contact) ? $account->contact : config('contact.settings')->get('user_default_enabled');
 }
 
 /**
@@ -250,10 +250,23 @@ function contact_form_user_admin_settings_alter(&$form, &$form_state) {
     '#title' => t('Contact settings'),
     '#weight' => 0,
   );
-  $form['contact']['contact_default_status'] = array(
+  $form['contact']['user_default_enabled'] = array(
     '#type' => 'checkbox',
     '#title' => t('Enable the personal contact form by default for new users.'),
     '#description' => t('Changing this setting will not affect existing users.'),
-    '#default_value' => variable_get('contact_default_status', 1),
+    '#default_value' => config('contact.settings')->get('user_default_enabled'),
   );
+  // Add submit handler to save contact configuration.
+  $form['#submit'][] = 'contact_form_user_admin_settings_submit';
+}
+
+/**
+ * Form builder submit handler; Handle submission for user contact default.
+ *
+ * @ingroup forms
+ */
+function contact_form_user_admin_settings_submit($form, &$form_state) {
+  config('contact.settings')
+    ->set('user_default_enabled', $form_state['values']['user_default_enabled'])
+    ->save();
 }
diff --git a/core/modules/contact/contact.pages.inc b/core/modules/contact/contact.pages.inc
index d20d79a..0866821 100644
--- a/core/modules/contact/contact.pages.inc
+++ b/core/modules/contact/contact.pages.inc
@@ -20,10 +20,11 @@ function contact_site_form($form, &$form_state) {
   global $user;
 
   // Check if flood control has been activated for sending e-mails.
-  $limit = variable_get('contact_threshold_limit', 5);
-  $window = variable_get('contact_threshold_window', 3600);
-  if (!flood_is_allowed('contact', $limit, $window) && !user_access('administer contact forms')) {
-    drupal_set_message(t("You cannot send more than %limit messages in @interval. Try again later.", array('%limit' => $limit, '@interval' => format_interval($window))), 'error');
+  $config = config('contact.settings');
+  $limit = $config->get('flood.limit');
+  $interval = $config->get('flood.interval');
+  if (!flood_is_allowed('contact', $limit, $interval) && !user_access('administer contact forms')) {
+    drupal_set_message(t("You cannot send more than %limit messages in @interval. Try again later.", array('%limit' => $limit, '@interval' => format_interval($interval))), 'error');
     throw new AccessDeniedHttpException();
   }
 
@@ -180,7 +181,7 @@ function contact_site_form_submit($form, &$form_state) {
     drupal_mail('contact', 'page_autoreply', $from, $language_interface, $values, $to);
   }
 
-  flood_register_event('contact', variable_get('contact_threshold_window', 3600));
+  flood_register_event('contact', config('contact.settings')->get('flood.interval'));
   watchdog('mail', '%sender-name (@sender-from) sent an e-mail regarding %category.', array('%sender-name' => $values['name'], '@sender-from' => $from, '%category' => $values['category']['category']));
 
   // Jump to home page rather than back to contact page to avoid
@@ -201,10 +202,11 @@ function contact_personal_form($form, &$form_state, $recipient) {
   global $user;
 
   // Check if flood control has been activated for sending e-mails.
-  $limit = variable_get('contact_threshold_limit', 5);
-  $window = variable_get('contact_threshold_window', 3600);
-  if (!flood_is_allowed('contact', $limit, $window) && !user_access('administer contact forms') && !user_access('administer users')) {
-    drupal_set_message(t("You cannot send more than %limit messages in @interval. Try again later.", array('%limit' => $limit, '@interval' => format_interval($window))), 'error');
+  $config = config('contact.settings');
+  $limit = $config->get('flood.limit');
+  $interval = $config->get('flood.interval');
+  if (!flood_is_allowed('contact', $limit, $interval) && !user_access('administer contact forms') && !user_access('administer users')) {
+    drupal_set_message(t("You cannot send more than %limit messages in @interval. Try again later.", array('%limit' => $limit, '@interval' => format_interval($interval))), 'error');
     throw new AccessDeniedHttpException();
   }
 
@@ -315,7 +317,7 @@ function contact_personal_form_submit($form, &$form_state) {
     drupal_mail('contact', 'user_copy', $from, $language_interface, $values, $from);
   }
 
-  flood_register_event('contact', variable_get('contact_threshold_window', 3600));
+  flood_register_event('contact', config('contact.settings')->get('flood.interval'));
   watchdog('mail', '%sender-name (@sender-from) sent %recipient-name an e-mail.', array('%sender-name' => $values['name'], '@sender-from' => $from, '%recipient-name' => $values['recipient']->name));
 
   // Jump to the contacted user's profile page.
diff --git a/core/modules/contact/lib/Drupal/contact/Tests/ContactPersonalTest.php b/core/modules/contact/lib/Drupal/contact/Tests/ContactPersonalTest.php
index 0d5ff96..3dcecb2 100644
--- a/core/modules/contact/lib/Drupal/contact/Tests/ContactPersonalTest.php
+++ b/core/modules/contact/lib/Drupal/contact/Tests/ContactPersonalTest.php
@@ -32,7 +32,7 @@ class ContactPersonalTest extends WebTestBase {
     $this->admin_user = $this->drupalCreateUser(array('administer contact forms', 'administer users'));
 
     // Create some normal users with their contact forms enabled by default.
-    variable_set('contact_default_status', TRUE);
+    config('contact.settings')->set('user_default_enabled', 1)->save();
     $this->web_user = $this->drupalCreateUser(array('access user contact forms'));
     $this->contact_user = $this->drupalCreateUser();
   }
@@ -84,7 +84,7 @@ class ContactPersonalTest extends WebTestBase {
 
     // Disable the personal contact form.
     $this->drupalLogin($this->admin_user);
-    $edit = array('contact_default_status' => FALSE);
+    $edit = array('user_default_enabled' => FALSE);
     $this->drupalPost('admin/config/people/accounts', $edit, t('Save configuration'));
     $this->assertText(t('The configuration options have been saved.'), t('Setting successfully saved.'));
     $this->drupalLogout();
@@ -123,7 +123,7 @@ class ContactPersonalTest extends WebTestBase {
    */
   function testPersonalContactFlood() {
     $flood_limit = 3;
-    variable_set('contact_threshold_limit', $flood_limit);
+    config('contact.settings')->set('flood.limit', $flood_limit)->save();
 
     // Clear flood table in preparation for flood test and allow other checks to complete.
     db_delete('flood')->execute();
@@ -140,7 +140,7 @@ class ContactPersonalTest extends WebTestBase {
 
     // Submit contact form one over limit.
     $this->drupalGet('user/' . $this->contact_user->uid. '/contact');
-    $this->assertRaw(t('You cannot send more than %number messages in @interval. Try again later.', array('%number' => $flood_limit, '@interval' => format_interval(variable_get('contact_threshold_window', 3600)))), 'Normal user denied access to flooded contact form.');
+    $this->assertRaw(t('You cannot send more than %number messages in @interval. Try again later.', array('%number' => $flood_limit, '@interval' => format_interval(config('contact.settings')->get('flood.interval')))), 'Normal user denied access to flooded contact form.');
 
     // Test that the admin user can still access the contact form even though
     // the flood limit was reached.
diff --git a/core/modules/contact/lib/Drupal/contact/Tests/ContactSitewideTest.php b/core/modules/contact/lib/Drupal/contact/Tests/ContactSitewideTest.php
index 6519267..9a93390 100644
--- a/core/modules/contact/lib/Drupal/contact/Tests/ContactSitewideTest.php
+++ b/core/modules/contact/lib/Drupal/contact/Tests/ContactSitewideTest.php
@@ -34,12 +34,14 @@ class ContactSitewideTest extends WebTestBase {
     $this->drupalLogin($admin_user);
 
     $flood_limit = 3;
-    variable_set('contact_threshold_limit', $flood_limit);
-    variable_set('contact_threshold_window', 600);
+    config('contact.settings')
+      ->set('flood.limit', $flood_limit)
+      ->set('flood.interval', 600)
+      ->save();
 
     // Set settings.
     $edit = array();
-    $edit['contact_default_status'] = TRUE;
+    $edit['user_default_enabled'] = TRUE;
     $this->drupalPost('admin/config/people/accounts', $edit, t('Save configuration'));
     $this->assertText(t('The configuration options have been saved.'), t('Setting successfully saved.'));
 
@@ -158,7 +160,7 @@ class ContactSitewideTest extends WebTestBase {
     // Submit contact form one over limit.
     $this->drupalGet('contact');
     $this->assertResponse(403, t('Access denied to anonymous user after reaching message treshold.'));
-    $this->assertRaw(t('You cannot send more than %number messages in @interval. Try again later.', array('%number' => variable_get('contact_threshold_limit', 3), '@interval' => format_interval(600))), t('Message threshold reached.'));
+    $this->assertRaw(t('You cannot send more than %number messages in @interval. Try again later.', array('%number' => config('contact.settings')->get('flood.limit'), '@interval' => format_interval(600))), t('Message threshold reached.'));
 
     // Delete created categories.
     $this->drupalLogin($admin_user);