diff --git a/changelog/66_UNRELEASED_xxxx-xx-xx.md b/changelog/66_UNRELEASED_xxxx-xx-xx.md
index c4c30d31..3791db24 100644
--- a/changelog/66_UNRELEASED_xxxx-xx-xx.md
+++ b/changelog/66_UNRELEASED_xxxx-xx-xx.md
@@ -4,6 +4,7 @@
 - When using reverse proxy authentication (`ReverseProxyAuthMiddleware`), it's now also possible to pass the username in an environment variable instead of an HTTP header (new `config.php` option `REVERSE_PROXY_AUTH_USE_ENV`) (thanks @Forceu)
 - Performance improvements (page loading time) of the recipes page
 - Fixed that stock entry labels on purchase were printed, even when "No label" was selected (was only a problem when running label printer WebHooks server side)
+- Fixed that when adding missing recipe ingredients, with the option "Only check if any amount is in stock" enabled, to the shopping list, unit conversions (if any) weren't considered
 - Fixed that the meal plan showed the total calories per recipe (instead of per serving as stated by the suffix)
 - Fixed that formatted (HTML) text for the (hidden by default) product description column on the stock overview page was not correctly displayed
 - Fixed that numeric and date-time sorting of table columns on the stock entries page did not work correctly (thanks @MasterofJOKers)
diff --git a/migrations/0159.sql b/migrations/0159.sql
new file mode 100644
index 00000000..09922a87
--- /dev/null
+++ b/migrations/0159.sql
@@ -0,0 +1,107 @@
+DROP VIEW recipes_pos_resolved;
+CREATE VIEW recipes_pos_resolved
+AS
+
+-- Multiplication by 1.0 to force conversion to float (REAL)
+
+SELECT
+	r.id AS recipe_id,
+	rp.id AS recipe_pos_id,
+	rp.product_id AS product_id,
+	CASE WHEN rnr.recipe_id = rnr.includes_recipe_id THEN rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) ELSE rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) * ((rnr.includes_servings*1.0) / (rnrr.base_servings*1.0)) END AS recipe_amount,
+	IFNULL(sc.amount_aggregated, 0) AS stock_amount,
+	CASE WHEN IFNULL(sc.amount_aggregated, 0) >= CASE WHEN rp.only_check_single_unit_in_stock = 1 THEN 0.00000001 ELSE CASE WHEN rnr.recipe_id = rnr.includes_recipe_id THEN rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) ELSE rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) * ((rnr.includes_servings*1.0) / (rnrr.base_servings*1.0)) END END THEN 1 ELSE 0 END AS need_fulfilled,
+	CASE WHEN IFNULL(sc.amount_aggregated, 0) - CASE WHEN rp.only_check_single_unit_in_stock = 1 THEN 0.00000001 ELSE CASE WHEN rnr.recipe_id = rnr.includes_recipe_id THEN rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) ELSE rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) * ((rnr.includes_servings*1.0) / (rnrr.base_servings*1.0)) END END < 0 THEN ABS(IFNULL(sc.amount_aggregated, 0) - (CASE WHEN rnr.recipe_id = rnr.includes_recipe_id THEN rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) ELSE rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) * ((rnr.includes_servings*1.0) / (rnrr.base_servings*1.0)) END)) ELSE 0 END AS missing_amount,
+	IFNULL(sl.amount, 0) * p.qu_factor_purchase_to_stock AS amount_on_shopping_list,
+	CASE WHEN IFNULL(sc.amount_aggregated, 0) + (CASE WHEN r.not_check_shoppinglist = 1 THEN 0 ELSE IFNULL(sl.amount, 0) END * p.qu_factor_purchase_to_stock) >= CASE WHEN rp.only_check_single_unit_in_stock = 1 THEN 0.00000001 ELSE CASE WHEN rnr.recipe_id = rnr.includes_recipe_id THEN rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) ELSE rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) * ((rnr.includes_servings*1.0) / (rnrr.base_servings*1.0)) END END THEN 1 ELSE 0 END AS need_fulfilled_with_shopping_list,
+	rp.qu_id,
+	(r.desired_servings*1.0 / r.base_servings*1.0) * (rnr.includes_servings*1.0 / CASE WHEN rnr.recipe_id != rnr.includes_recipe_id THEN rnrr.base_servings*1.0 ELSE 1 END) * rp.amount * IFNULL(pop.price, 0) * rp.price_factor * CASE WHEN rp.only_check_single_unit_in_stock = 1 THEN IFNULL(qucr.factor, 1) ELSE 1 END AS costs,
+	CASE WHEN rnr.recipe_id = rnr.includes_recipe_id THEN 0 ELSE 1 END AS is_nested_recipe_pos,
+	rp.ingredient_group,
+	pg.name as product_group,
+	rp.id, -- Just a dummy id column
+	r.type as recipe_type,
+	rnr.includes_recipe_id as child_recipe_id,
+	rp.note,
+	rp.variable_amount AS recipe_variable_amount,
+	rp.only_check_single_unit_in_stock,
+	rp.amount / r.base_servings*1.0 * (rnr.includes_servings*1.0 / CASE WHEN rnr.recipe_id != rnr.includes_recipe_id THEN rnrr.base_servings*1.0 ELSE 1 END) * IFNULL(p.calories, 0) * CASE WHEN rp.only_check_single_unit_in_stock = 1 THEN IFNULL(qucr.factor, 1) ELSE 1 END AS calories,
+	p.active AS product_active
+FROM recipes r
+JOIN recipes_nestings_resolved rnr
+	ON r.id = rnr.recipe_id
+JOIN recipes rnrr
+	ON rnr.includes_recipe_id = rnrr.id
+JOIN recipes_pos rp
+	ON rnr.includes_recipe_id = rp.recipe_id
+JOIN products p
+	ON rp.product_id = p.id
+LEFT JOIN product_groups pg
+	ON p.product_group_id = pg.id
+LEFT JOIN (
+	SELECT product_id, SUM(amount) AS amount
+	FROM shopping_list
+	GROUP BY product_id) sl
+	ON rp.product_id = sl.product_id
+LEFT JOIN stock_current sc
+	ON rp.product_id = sc.product_id
+LEFT JOIN products_oldest_stock_unit_price pop
+	ON rp.product_id = pop.product_id
+LEFT JOIN quantity_unit_conversions_resolved qucr
+	ON rp.product_id = qucr.product_id
+	AND rp.qu_id  = qucr.from_qu_id
+	AND p.qu_id_stock = qucr.to_qu_id
+WHERE rp.not_check_stock_fulfillment = 0
+
+UNION
+
+-- Just add all recipe positions which should not be checked against stock with fulfilled need
+
+SELECT
+	r.id AS recipe_id,
+	rp.id AS recipe_pos_id,
+	rp.product_id AS product_id,
+	CASE WHEN rnr.recipe_id = rnr.includes_recipe_id THEN rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) ELSE rp.amount * ((r.desired_servings*1.0) / (r.base_servings*1.0)) * ((rnr.includes_servings*1.0) / (rnrr.base_servings*1.0)) END AS recipe_amount,
+	IFNULL(sc.amount_aggregated, 0) AS stock_amount,
+	1 AS need_fulfilled,
+	0 AS missing_amount,
+	IFNULL(sl.amount, 0) * p.qu_factor_purchase_to_stock AS amount_on_shopping_list,
+	1 AS need_fulfilled_with_shopping_list,
+	rp.qu_id,
+	(r.desired_servings*1.0 / r.base_servings*1.0) * (rnr.includes_servings*1.0 / CASE WHEN rnr.recipe_id != rnr.includes_recipe_id THEN rnrr.base_servings*1.0 ELSE 1 END) * rp.amount * IFNULL(pop.price, 0) * rp.price_factor * CASE WHEN rp.only_check_single_unit_in_stock = 1 THEN IFNULL(qucr.factor, 1) ELSE 1 END AS costs,
+	CASE WHEN rnr.recipe_id = rnr.includes_recipe_id THEN 0 ELSE 1 END AS is_nested_recipe_pos,
+	rp.ingredient_group,
+	pg.name as product_group,
+	rp.id, -- Just a dummy id column
+	r.type as recipe_type,
+	rnr.includes_recipe_id as child_recipe_id,
+	rp.note,
+	rp.variable_amount AS recipe_variable_amount,
+	rp.only_check_single_unit_in_stock,
+	rp.amount / r.base_servings*1.0 * (rnr.includes_servings*1.0 / CASE WHEN rnr.recipe_id != rnr.includes_recipe_id THEN rnrr.base_servings*1.0 ELSE 1 END) * IFNULL(p.calories, 0) * CASE WHEN rp.only_check_single_unit_in_stock = 1 THEN IFNULL(qucr.factor, 1) ELSE 1 END AS calories,
+	p.active AS product_active
+FROM recipes r
+JOIN recipes_nestings_resolved rnr
+	ON r.id = rnr.recipe_id
+JOIN recipes rnrr
+	ON rnr.includes_recipe_id = rnrr.id
+JOIN recipes_pos rp
+	ON rnr.includes_recipe_id = rp.recipe_id
+JOIN products p
+	ON rp.product_id = p.id
+LEFT JOIN product_groups pg
+	ON p.product_group_id = pg.id
+LEFT JOIN (
+	SELECT product_id, SUM(amount) AS amount
+	FROM shopping_list
+	GROUP BY product_id) sl
+	ON rp.product_id = sl.product_id
+LEFT JOIN stock_current sc
+	ON rp.product_id = sc.product_id
+LEFT JOIN products_oldest_stock_unit_price pop
+	ON rp.product_id = pop.product_id
+LEFT JOIN quantity_unit_conversions_resolved qucr
+	ON rp.product_id = qucr.product_id
+	AND rp.qu_id  = qucr.from_qu_id
+	AND p.qu_id_stock = qucr.to_qu_id
+WHERE rp.not_check_stock_fulfillment = 1;
diff --git a/services/RecipesService.php b/services/RecipesService.php
index caccb355..7b17d0f7 100644
--- a/services/RecipesService.php
+++ b/services/RecipesService.php
@@ -36,6 +36,18 @@ class RecipesService extends BaseService
 					$toOrderAmount = round($recipePosition->missing_amount, 2);
 				}
 
+				// When the recipe ingredient option "Only check if any amount is in stock" is enabled,
+				// any QU can be used and the amount is not based on qu_stock then
+				// => Do the unit conversion here (if any)
+				if ($recipePosition->only_check_single_unit_in_stock == 1)
+				{
+					$conversion = $this->getDatabase()->quantity_unit_conversions_resolved()->where('product_id = :1 AND from_qu_id = :2 AND to_qu_id = :3', $recipePosition->product_id, $recipePosition->qu_id, $product->qu_id_stock)->fetch();
+					if ($conversion != null)
+					{
+						$toOrderAmount = $toOrderAmount * floatval($conversion->factor);
+					}
+				}
+
 				if ($toOrderAmount > 0)
 				{
 					$note = $this->getLocalizationService()->__t('Added for recipe %s', $recipe->name);