diff --git a/core/modules/file/src/Entity/File.php b/core/modules/file/src/Entity/File.php
index a9ade9e7d6..e35ff2ec91 100644
--- a/core/modules/file/src/Entity/File.php
+++ b/core/modules/file/src/Entity/File.php
@@ -8,6 +8,7 @@
 use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Field\BaseFieldDefinition;
 use Drupal\file\FileInterface;
+use Drupal\file\FileUriItem;
 use Drupal\user\UserInterface;
 
 /**
@@ -250,6 +251,11 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setSetting('case_sensitive', TRUE)
       ->addConstraint('FileUriUnique');
 
+    // Override the default item class with a file specific implementation that
+    // provides an additional computed URL property.
+    // @see \Drupal\file\FileUriItem::propertyDefinitions()
+    $fields['uri']->getItemDefinition()->setClass(FileUriItem::class);
+
     $fields['filemime'] = BaseFieldDefinition::create('string')
       ->setLabel(t('File MIME type'))
       ->setSetting('is_ascii', TRUE)
diff --git a/core/modules/file/src/FileUriItem.php b/core/modules/file/src/FileUriItem.php
new file mode 100644
index 0000000000..74ef1593b0
--- /dev/null
+++ b/core/modules/file/src/FileUriItem.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace Drupal\file;
+
+use Drupal\Core\Field\FieldStorageDefinitionInterface;
+use Drupal\Core\Field\Plugin\Field\FieldType\UriItem;
+use Drupal\Core\TypedData\DataDefinition;
+
+/**
+ * File specific implementation of a URI Item to provide a full URL.
+ */
+class FileUriItem extends UriItem {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
+    $properties = parent::propertyDefinitions($field_definition);
+
+    // @todo should this just be a string?
+    $properties['url'] = DataDefinition::create('uri')
+      ->setLabel(t('Full URL'))
+      ->setSetting('case_sensitive', $field_definition->getSetting('case_sensitive'))
+      ->setComputed(TRUE)
+      ->setClass(FileUrl::class);
+
+    return $properties;
+  }
+
+}
diff --git a/core/modules/file/src/FileUrl.php b/core/modules/file/src/FileUrl.php
new file mode 100644
index 0000000000..aabac350ad
--- /dev/null
+++ b/core/modules/file/src/FileUrl.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace Drupal\file;
+
+use Drupal\Core\TypedData\TypedData;
+
+/**
+ * Computed file URL property class.
+ */
+class FileUrl extends TypedData {
+
+  /**
+   * Cached URL.
+   *
+   * @var string|null
+   */
+  protected $url = NULL;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getValue() {
+    if ($this->url !== NULL) {
+      return $this->url;
+    }
+
+    $this->url = $this->getParent()->getEntity()->url();
+
+    return $this->url;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setValue($value, $notify = TRUE) {
+    $this->url = $value;
+
+    // Notify the parent of any changes.
+    if ($notify && isset($this->parent)) {
+      $this->parent->onChange($this->name);
+    }
+  }
+
+}