McDonald’s Diet Coke®: Fountain Drink Price, Nutrition & Allergen

Diet Coke®

Small– $2.19 | 0cal Medium-$2.59 |0cal Large -$3.19 | 0cal

Diet Coke fixes everything. That’s why it’s a staple. Wondering why it tastes so good at McDonald’s? The Coke® products are fresh, and the guidelines set by Coca-Cola® are always followed by using a ratio of syrup that allows ice to melt—plus the water and Coca-Cola® syrup are pre-chilled before they enter the soda fountain.

Diet Coke® has zero calories and is available in extra small, small, medium and large fountain drink sizes. Order yours today from the full menu in the app for pickup or McDelivery®.*

*At participating McDonald’s. McDelivery prices may be higher than at restaurants. Delivery/other fees may apply.

Order it now through Mobile Order & Pay on the McDonald’s app or via McDelivery®.

Nutrition Facts: Diet Coke® (Per Serving)

NutrientAmount% Daily Value
Calories0 Cal
Total Fat0g0%
Saturated Fat0g0%
Trans Fat0g
Cholesterol0mg0%
Sodium50mg2%
Total Carbohydrates0g0%
Dietary Fiber0g0%
Total Sugars0g
Added Sugars0g0%
Protein0g
Calcium2mg0%
Iron0mg0%
Potassium45mg0%
Vitamin D0mcg0%

Allergen Information

Diet Coke

Ingredients: Carbonated Water, Caramel Color, Phosphoric Acid, Sodium Saccharin, Potassium Benzoate (to Protect Taste), Natural Flavors, Citric Acid, Caffeine, Potassium Citrate, Aspartame

Ice

Ingredients: Ice.

Frequently Asked QuestionsMcDonald’s Diet Coke®

McDonald’s utilizes Coca-Cola® syrup and adheres to exclusive chilling and mixing protocols, which many customers claim makes it superior to bottled varieties.

Yes, Diet Coke® holds roughly 46 mg of caffeine in a small serving.

Yes, Diet Coke® is a core beverage option at virtually all McDonald’s restaurants in the U.S.

You can select it in Extra Small, Small, Medium, or Large fountain drink options.

Yes, Diet Coke® has no sugar and zero calories, making it typically safe for most individuals with diabetes. However, seek your doctor’s guidance for personalized recommendations.

At numerous restaurants, Extra Small and Small Diet Coke® are featured on the $1 $2 $3 Dollar Menu.

Yes, McDonald’s permits customizations like light ice, no ice, or extra ice via the app or when ordering in person.

Diet Coke® includes Aspartame and Sodium Saccharin, both calorie-free sweetening agents.

Yes, Diet Coke® is verified gluten-free, with no ingredients sourced from gluten-containing grains.

Definitely! Diet Coke® can be chosen as your fountain beverage in most combo meals, whether ordering in-store, via kiosk, or through the app.

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