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

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

View Full: McDonald’s menu with prices

Try a refreshing, icy cold Diet Coke® from McDonald’s, the go-to zero-calorie, zero-sugar soda that pairs perfectly with any McDonald’s meal. Served chilled through specialized fountains that follow Coca-Cola®’s guidelines, McDonald’s ensures each sip is crisp, fizzy, and fresh-tasting. Whether you’re cutting sugar or just love the flavor, Diet Coke® is available all day in various sizes — and it’s part of the Dollar Menu at participating locations.

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

Nutritional Information (Per Serving)

Nutrient	Amount	% Daily Value
Calories	0 Cal	–
Total Fat	0g	0%
Saturated Fat	0g	0%
Trans Fat	0g	–
Cholesterol	0mg	0%
Sodium	50mg	2%
Total Carbohydrates	0g	0%
Dietary Fiber	0g	0%
Total Sugars	0g	–
Added Sugars	0g	0%
Protein	0g	–
Calcium	2mg	0%
Iron	0mg	0%
Potassium	45mg	0%
Vitamin D	0mcg	0%

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.

FAQs : McDonald’s Diet Coke®

Is McDonald’s Diet Coke® the same as store-bought Diet Coke®?

McDonald’s uses Coca-Cola® syrup and follows proprietary chilling and ratio protocols, which many people say makes it taste better than bottled versions.

Does McDonald’s Diet Coke® contain caffeine?

Yes, Diet Coke® contains approximately 46 mg of caffeine in a small size.

Is Diet Coke® available in all McDonald’s locations?

Yes, Diet Coke® is a standard beverage offering at nearly all McDonald’s locations in the U.S.

What sizes does Diet Coke® come in?

You can order it in Extra Small, Small, Medium, or Large fountain drink sizes.

Is Diet Coke® safe for diabetics?

Yes, Diet Coke® contains no sugar and no calories, making it generally safe for most people with diabetes. However, consult your doctor for personal advice.

Does McDonald’s serve Diet Coke® on the Dollar Menu?

At many locations, Extra Small and Small Diet Coke® are available on the $1 $2 $3 Dollar Menu.

Can I order Diet Coke® with no ice?

Yes, McDonald’s allows customizations such as light ice, no ice, or extra ice through the app or in-person ordering.

What sweeteners are used in McDonald’s Diet Coke®?

Diet Coke® contains Aspartame and Sodium Saccharin, both non-nutritive sweeteners.

Is Diet Coke® gluten-free?

Yes, Diet Coke® is certified gluten-free, containing no ingredients derived from gluten sources.

Can I include Diet Coke® in my combo meal?

Absolutely! Diet Coke® can be selected as your fountain drink in most combo meals, whether you order in-store, via kiosk, or through the app.