diff --git a/core/lib/Drupal/Core/Entity/FieldableEntityStorageControllerBase.php b/core/lib/Drupal/Core/Entity/FieldableEntityStorageControllerBase.php
index 5d01819..6180e6f 100644
--- a/core/lib/Drupal/Core/Entity/FieldableEntityStorageControllerBase.php
+++ b/core/lib/Drupal/Core/Entity/FieldableEntityStorageControllerBase.php
@@ -166,7 +166,7 @@ protected function loadFieldItems(array $entities) {
           foreach ($entity->getTranslationLanguages() as $langcode => $language) {
             $translation = $entity->getTranslation($langcode);
             foreach ($translation as $field_name => $items) {
-              if ($items->getFieldDefinition()->isConfigurable() && !$items->isEmpty()) {
+              if (!$items->isEmpty()) {
                 foreach ($items as $delta => $item) {
                   // If the field item needs to prepare the cache data, call the
                   // corresponding method, otherwise use the values as cache
diff --git a/core/lib/Drupal/Core/Field/FieldDefinition.php b/core/lib/Drupal/Core/Field/FieldDefinition.php
index 46ad53d..3968624 100644
--- a/core/lib/Drupal/Core/Field/FieldDefinition.php
+++ b/core/lib/Drupal/Core/Field/FieldDefinition.php
@@ -306,13 +306,6 @@ public function isDisplayConfigurable($display_context) {
   /**
    * {@inheritdoc}
    */
-  public function isConfigurable() {
-    return !empty($this->definition['no_ui']) && !empty($this->definition['default_widget']) && !empty($this->definition['default_formatter']);
-  }
-
-  /**
-   * {@inheritdoc}
-   */
   public function getDefaultValue(EntityInterface $entity) {
     return $this->getSetting('default_value');
   }
diff --git a/core/lib/Drupal/Core/Field/FieldDefinitionInterface.php b/core/lib/Drupal/Core/Field/FieldDefinitionInterface.php
index c28f911..06de3c6 100644
--- a/core/lib/Drupal/Core/Field/FieldDefinitionInterface.php
+++ b/core/lib/Drupal/Core/Field/FieldDefinitionInterface.php
@@ -112,14 +112,6 @@ public function getSetting($setting_name);
   public function isTranslatable();
 
   /**
-   * Returns whether the field is configurable via field.module.
-   *
-   * @return bool
-   *   TRUE if the field is configurable.
-   */
-  public function isConfigurable();
-
-  /**
    * Returns whether the display for the field can be configured.
    *
    * @param string $display_context
diff --git a/core/lib/Drupal/Core/Field/FieldTypePluginManager.php b/core/lib/Drupal/Core/Field/FieldTypePluginManager.php
index 74a884e..5fceb17 100644
--- a/core/lib/Drupal/Core/Field/FieldTypePluginManager.php
+++ b/core/lib/Drupal/Core/Field/FieldTypePluginManager.php
@@ -70,4 +70,14 @@ public function getDefaultInstanceSettings($type) {
     return isset($info['instance_settings']) ? $info['instance_settings'] : array();
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getUiDefinitions() {
+    $definitions = $this->getDefinitions();
+    return array_filter($definitions, function ($definition) {
+      return empty($definition['no_ui']) && !empty($definition['default_formatter']) && !empty($definition['default_widget']);
+    });
+  }
+
 }
diff --git a/core/lib/Drupal/Core/Field/FieldTypePluginManagerInterface.php b/core/lib/Drupal/Core/Field/FieldTypePluginManagerInterface.php
index f3f40e8..c36447d 100644
--- a/core/lib/Drupal/Core/Field/FieldTypePluginManagerInterface.php
+++ b/core/lib/Drupal/Core/Field/FieldTypePluginManagerInterface.php
@@ -38,4 +38,12 @@ public function getDefaultInstanceSettings($type);
    */
   public function getDefaultSettings($type);
 
+  /**
+   * Gets the definition of all field types that could be added via UI.
+   *
+   * @return array
+   *   An array of field type definitions.
+   */
+  public function getUiDefinitions();
+
 }
diff --git a/core/modules/content_translation/content_translation.admin.inc b/core/modules/content_translation/content_translation.admin.inc
index ef0e4ca..8e3cfb4 100644
--- a/core/modules/content_translation/content_translation.admin.inc
+++ b/core/modules/content_translation/content_translation.admin.inc
@@ -102,7 +102,7 @@ function _content_translation_form_language_content_settings_form_alter(array &$
             // translation.
             // @todo Remove this special casing as soon as configurable and
             //   base field definitions are "unified".
-            if ($definition->isConfigurable() && ($field = FieldService::fieldInfo()->getField($entity_type_id, $field_name))) {
+            if ($field = FieldService::fieldInfo()->getField($entity_type_id, $field_name)) {
               $instance = FieldService::fieldInfo()->getInstance($entity_type_id, $bundle, $field_name);
               $form['settings'][$entity_type_id][$bundle]['fields'][$field_name] = array(
                 '#label' => $instance->getLabel(),
diff --git a/core/modules/editor/editor.module b/core/modules/editor/editor.module
index e3ff037..9d18021 100644
--- a/core/modules/editor/editor.module
+++ b/core/modules/editor/editor.module
@@ -10,7 +10,6 @@
 use Drupal\editor\Entity\Editor;
 use Drupal\Component\Utility\NestedArray;
 use Drupal\Core\Entity\EntityInterface;
-use Drupal\field\Field;
 use Drupal\filter\FilterFormatInterface;
 use Drupal\filter\Plugin\FilterInterface;
 
@@ -556,22 +555,10 @@ function _editor_get_processed_text_fields(ContentEntityInterface $entity) {
     return array();
   }
 
-  // Find all configurable fields, because only they could have a
-  // text_processing setting.
-  $configurable_fields = array_keys(array_filter($field_definitions, function ($definition) {
-    return $definition->isConfigurable();
-  }));
-  if (empty($configurable_fields)) {
-    return array();
-  }
-
   // Only return fields that have text processing enabled.
-  return array_filter($configurable_fields, function ($field) use ($entity) {
-    $settings = Field::fieldInfo()
-      ->getInstance($entity->getEntityTypeId(), $entity->bundle(), $field)
-      ->getSettings();
-    return isset($settings['text_processing']) && $settings['text_processing'] === TRUE;
-  });
+  return array_keys(array_filter($field_definitions, function ($definition) {
+    return $definition->getSetting('text_processing') === TRUE;
+  }));
 }
 
 /**
diff --git a/core/modules/field/field.deprecated.inc b/core/modules/field/field.deprecated.inc
index 73a715c..f939d0e 100644
--- a/core/modules/field/field.deprecated.inc
+++ b/core/modules/field/field.deprecated.inc
@@ -335,8 +335,7 @@ function field_attach_form(EntityInterface $entity, &$form, &$form_state, $langc
 function field_attach_form_validate(ContentEntityInterface $entity, $form, &$form_state, array $options = array()) {
   $has_violations = FALSE;
   foreach ($entity as $field_name => $field) {
-    $definition = $field->getFieldDefinition();
-    if ($definition->isConfigurable() && (empty($options['field_name']) || $options['field_name'] == $field_name)) {
+    if (empty($options['field_name']) || $options['field_name'] == $field_name) {
       $field_violations = $field->validate();
       if (count($field_violations)) {
         $has_violations = TRUE;
diff --git a/core/modules/field/lib/Drupal/field/Entity/FieldConfig.php b/core/modules/field/lib/Drupal/field/Entity/FieldConfig.php
index 81d488c..e4eeaa4 100644
--- a/core/modules/field/lib/Drupal/field/Entity/FieldConfig.php
+++ b/core/modules/field/lib/Drupal/field/Entity/FieldConfig.php
@@ -608,13 +608,6 @@ public function getDefaultValue(EntityInterface $entity) { }
   /**
    * {@inheritdoc}
    */
-  public function isConfigurable() {
-    return TRUE;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
   public function isDisplayConfigurable($context) {
     return TRUE;
   }
diff --git a/core/modules/field/lib/Drupal/field/Entity/FieldInstanceConfig.php b/core/modules/field/lib/Drupal/field/Entity/FieldInstanceConfig.php
index bd9586c..12920be 100644
--- a/core/modules/field/lib/Drupal/field/Entity/FieldInstanceConfig.php
+++ b/core/modules/field/lib/Drupal/field/Entity/FieldInstanceConfig.php
@@ -564,13 +564,6 @@ public function getDefaultValue(EntityInterface $entity) {
   /**
    * {@inheritdoc}
    */
-  public function isConfigurable() {
-    return TRUE;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
   public function isDisplayConfigurable($context) {
     return TRUE;
   }
diff --git a/core/modules/field_ui/lib/Drupal/field_ui/FieldOverview.php b/core/modules/field_ui/lib/Drupal/field_ui/FieldOverview.php
index ba359cf..e253a8b 100644
--- a/core/modules/field_ui/lib/Drupal/field_ui/FieldOverview.php
+++ b/core/modules/field_ui/lib/Drupal/field_ui/FieldOverview.php
@@ -89,7 +89,7 @@ public function buildForm(array $form, array &$form_state, $entity_type_id = NUL
 
     // Gather bundle information.
     $instances = field_info_instances($this->entity_type, $this->bundle);
-    $field_types = $this->fieldTypeManager->getDefinitions();
+    $field_types = $this->fieldTypeManager->getUiDefinitions();
 
     // Field prefix.
     $field_prefix = \Drupal::config('field_ui.settings')->get('field_prefix');
@@ -180,10 +180,7 @@ public function buildForm(array $form, array &$form_state, $entity_type_id = NUL
     // Gather valid field types.
     $field_type_options = array();
     foreach ($field_types as $name => $field_type) {
-      // Skip field types which should not be added via user interface.
-      if (empty($field_type['no_ui'])) {
-        $field_type_options[$name] = $field_type['label'];
-      }
+      $field_type_options[$name] = $field_type['label'];
     }
     asort($field_type_options);
 
diff --git a/core/tests/Drupal/Tests/Core/Entity/FieldDefinitionTest.php b/core/tests/Drupal/Tests/Core/Entity/FieldDefinitionTest.php
index 309d99a..5ddd924 100644
--- a/core/tests/Drupal/Tests/Core/Entity/FieldDefinitionTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/FieldDefinitionTest.php
@@ -194,12 +194,4 @@ public function testFieldRequired() {
     $this->assertFalse($definition->isRequired());
   }
 
-  /**
-   * Tests configurable.
-   */
-  public function testFieldConfigurable() {
-    $definition = FieldDefinition::create($this->fieldType);
-    $this->assertFalse($definition->isConfigurable());
-  }
-
 }