diff --git a/core/config/schema/core.entity.schema.yml b/core/config/schema/core.entity.schema.yml
index 5ff02f3..e72cb7d 100644
--- a/core/config/schema/core.entity.schema.yml
+++ b/core/config/schema/core.entity.schema.yml
@@ -280,12 +280,9 @@ field_formatter_settings_numeric_base:
     format_plural:
       type: boolean
       label: 'Format plural'
-    format_plural_singular:
+    format_plural_string:
       type: label
-      label: 'Singular form'
-    format_plural_plural:
-      type: label
-      label: 'Plural form'
+      label: 'Singular and one or more plurals'
 
 field.formatter.settings.number_decimal:
   type: field_formatter_settings_numeric_base
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericFormatterBase.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericFormatterBase.php
index d7b90de..2c48ad9 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericFormatterBase.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericFormatterBase.php
@@ -27,8 +27,7 @@ public static function defaultSettings() {
       'thousand_separator' => '',
       'prefix_suffix' => TRUE,
       'format_plural' => FALSE,
-      'format_plural_singular' => '1',
-      'format_plural_plural' => '@count',
+      'format_plural_string' => '1' . LOCALE_PLURAL_DELIMITER . '@count',
     ) + parent::defaultSettings();
   }
 
@@ -65,28 +64,29 @@ public function settingsForm(array $form, FormStateInterface $form_state) {
       '#description' => $this->t('If checked, special handling will be used for plurality.'),
       '#default_value' => $this->getSetting('format_plural'),
     );
-    $form['format_plural_singular'] = array(
-      '#type' => 'textfield',
-      '#title' => $this->t('Singular form'),
-      '#default_value' => $this->getSetting('format_plural_singular'),
-      '#description' => $this->t('Text to use for the singular form.'),
-      '#states' => array(
-        'visible' => array(
-          ':input[name="options[format_plural]"]' => array('checked' => TRUE),
+    $plural_array = explode(LOCALE_PLURAL_DELIMITER, $this->getSetting('format_plural_string'));
+    // @todo get langcode of this formatter config to use for configuration.
+    // @todo figure out how to alter the form values when this is submitted.
+    $plurals = $this->getNumberOfPlurals();
+    for ($i = 0; $i < $plurals; $i++) {
+      $form['format_plural_values'][$i] = array(
+        '#type' => 'textfield',
+        '#title' => ($i == 0 ? $this->t('Singular form') : $this->formatPlural($i, 'First plural form', '@count. plural form')),
+        '#default_value' => isset($plural_array[$i]) ? $plural_array[$i] : '',
+        '#description' => $this->t('Text to use for this variant, @count will be replaced with the value.'),
+        '#states' => array(
+          'visible' => array(
+            ':input[name="options[format_plural]"]' => array('checked' => TRUE),
+          ),
         ),
-      ),
-    );
-    $form['format_plural_plural'] = array(
-      '#type' => 'textfield',
-      '#title' => $this->t('Plural form'),
-      '#default_value' => $this->getSetting('format_plural_plural'),
-      '#description' => $this->t('Text to use for the plural form, @count will be replaced with the value.'),
-      '#states' => array(
-        'visible' => array(
-          ':input[name="options[format_plural]"]' => array('checked' => TRUE),
-        ),
-      ),
-    );
+      );
+    }
+    if ($plurals == 2) {
+      // Simplify user interface text for the most common case.
+      $form['format_plural_values'][0]['#description'] = $this->t('Text to use for the singular form, @count will be replaced with the value.');
+      $form['format_plural_values'][1]['#title'] = $this->t('Plural form');
+      $form['format_plural_values'][1]['#description'] = $this->t('Text to use for the plural form, @count will be replaced with the value.');
+    }
 
     return $elements;
   }
@@ -116,7 +116,7 @@ public function viewElements(FieldItemListInterface $items) {
       $output = $this->numberFormat($item->value);
 
       if ($this->getSetting('format_plural')) {
-        $output = $this->formatPlural($output, $this->getSetting('format_plural_singular'), $this->getSetting('format_plural_plural'));
+        $output = $this->formatPluralTranslated($output, $this->getSetting('format_plural_string'));
       }
 
       // Account for prefix and suffix.