diff --git a/cookbook/forms.py b/cookbook/forms.py
index 60c9691b1..55aa1a0ad 100644
--- a/cookbook/forms.py
+++ b/cookbook/forms.py
@@ -39,7 +39,7 @@ class UserPreferenceForm(forms.ModelForm):
     class Meta:
         model = UserPreference
         fields = (
-            'default_unit', 'use_fractions', 'theme', 'nav_color',
+            'default_unit', 'use_fractions', 'use_kj', 'theme', 'nav_color',
             'sticky_navbar', 'default_page', 'show_recent', 'search_style',
             'plan_share', 'ingredient_decimals', 'shopping_auto_sync',
             'comments'
@@ -52,6 +52,7 @@ class UserPreferenceForm(forms.ModelForm):
             'use_fractions': _(
                 'Enables support for fractions in ingredient amounts (e.g. convert decimals to fractions automatically)'),
             # noqa: E501
+            'use_kj': _('Display nutritional energy amounts in joules instead of calories'), # noqa: E501
             'plan_share': _(
                 'Users with whom newly created meal plan/shopping list entries should be shared by default.'),
             # noqa: E501
diff --git a/cookbook/migrations/0158_userpreference_use_kj.py b/cookbook/migrations/0158_userpreference_use_kj.py
new file mode 100644
index 000000000..bd2a27d79
--- /dev/null
+++ b/cookbook/migrations/0158_userpreference_use_kj.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.7 on 2021-10-25 05:21
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cookbook', '0157_alter_searchpreference_trigram'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='userpreference',
+            name='use_kj',
+            field=models.BooleanField(default=False),
+        ),
+    ]
diff --git a/cookbook/models.py b/cookbook/models.py
index 228c45be3..1e682f3a1 100644
--- a/cookbook/models.py
+++ b/cookbook/models.py
@@ -19,7 +19,8 @@ from treebeard.mp_tree import MP_Node, MP_NodeManager
 from django_scopes import ScopedManager, scopes_disabled
 from django_prometheus.models import ExportModelOperationsMixin
 from recipes.settings import (COMMENT_PREF_DEFAULT, FRACTION_PREF_DEFAULT,
-                              STICKY_NAV_PREF_DEFAULT, SORT_TREE_BY_NAME)
+                              KJ_PREF_DEFAULT, STICKY_NAV_PREF_DEFAULT,
+                              SORT_TREE_BY_NAME)
 
 
 def get_user_name(self):
@@ -217,6 +218,7 @@ class UserPreference(models.Model, PermissionModelMixin):
     )
     default_unit = models.CharField(max_length=32, default='g')
     use_fractions = models.BooleanField(default=FRACTION_PREF_DEFAULT)
+    use_kj = models.BooleanField(default=KJ_PREF_DEFAULT)
     default_page = models.CharField(
         choices=PAGES, max_length=64, default=SEARCH
     )
diff --git a/cookbook/views/views.py b/cookbook/views/views.py
index 0ccd54612..5a94412b9 100644
--- a/cookbook/views/views.py
+++ b/cookbook/views/views.py
@@ -307,6 +307,7 @@ def user_settings(request):
                 up.ingredient_decimals = form.cleaned_data['ingredient_decimals']  # noqa: E501
                 up.comments = form.cleaned_data['comments']
                 up.use_fractions = form.cleaned_data['use_fractions']
+                up.use_kj = form.cleaned_data['use_kj']
                 up.sticky_navbar = form.cleaned_data['sticky_navbar']
 
                 up.shopping_auto_sync = form.cleaned_data['shopping_auto_sync']
diff --git a/recipes/settings.py b/recipes/settings.py
index ebccbfa5e..5460d4818 100644
--- a/recipes/settings.py
+++ b/recipes/settings.py
@@ -44,6 +44,7 @@ REVERSE_PROXY_AUTH = bool(int(os.getenv('REVERSE_PROXY_AUTH', False)))
 # default value for user preference 'comment'
 COMMENT_PREF_DEFAULT = bool(int(os.getenv('COMMENT_PREF_DEFAULT', True)))
 FRACTION_PREF_DEFAULT = bool(int(os.getenv('FRACTION_PREF_DEFAULT', False)))
+KJ_PREF_DEFAULT = bool(int(os.getenv('KJ_PREF_DEFAULT', False)))
 STICKY_NAV_PREF_DEFAULT = bool(int(os.getenv('STICKY_NAV_PREF_DEFAULT', True)))
 
 # minimum interval that users can set for automatic sync of shopping lists