Diet Coke Price at McDonald's (2026)
A Diet Coke at McDonald's in United States is priced at $2.29 as of October 2026.
Based on the latest tracked prices, the Diet Coke® from McDonald's costs $2.29 in the United States (October 2026). That's about 21% below the typical McDonald's drink item — the 11th-cheapest of 53 we track. It's available at around 471 McDonald's locations across the United States. Prices are sourced from delivery platforms and refreshed regularly. Set a free alert to know the moment this price changes on MenuPriceToday.
How this compares in Drinks
53 items tracked| This item | $2.29 |
| Drinks median | $2.89 |
| Cheapest — Chocolate Milk | $1.89 |
| Most expensive — Gallon Southern Style Sweet Tea | $5.44 |
| vs Drinks median | −21% |
Nutrition
Ingredients⌄
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.
% DV = % of daily value based on a 2,000 kcal diet. Nutrition data from McDonald's's official information. For informational purposes only.
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Ingredients
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.