Diet Coke Nutrition Facts
A 100 g serving of diet coke contains 2.0 kcal, 0.1g protein (lime), 0.0g fat (pink) and 0.3g carbohydrate (blue). It has no fiber and almost no sugar. Its other nutrient values are modest — see the full breakdown below.
Core Nutrients per 100 g
PER 100 G SERVINGThe six values MacroDrop shows on every meal card: energy, the three macros, fiber and sugars.
Extended Nutrients
PER 100 G SERVINGGrouped as in the app: lipids, minerals, vitamins and other compounds sit one level below the core six. Daily values follow the FDA 2,000 kcal reference.
Understanding Diet Coke Nutrition
Diet Coke has essentially no meaningful calories, protein, carbohydrate or fat. At 2.0 kcal per 100 g serving, all four are close to zero — its sweetness comes from non-nutritive sweeteners rather than sugar.
For athletes and anyone tracking macros, diet coke's near-zero calorie count means it can be logged loosely without meaningfully affecting a calorie or macro budget. It doesn't offer any nutritional benefit beyond hydration and flavor, so it isn't a food to build a diet around either way.
Frequently Asked Questions
How many calories are in a 100 g serving of diet coke?
A 100 g serving of diet coke has 2.0 kcal, 0.1g protein, 0.0g fat and 0.3g carbohydrate.
How much protein is in diet coke?
0.1g per 100 g serving.
Does diet coke have carbs, sugar or protein?
Diet Coke has 0.3g carbs, 0.1g protein per 100 g serving.
Which nutrients is diet coke richest in?
No single micronutrient stands out sharply — see the full breakdown below.
Is diet coke good for tracking macros?
Diet coke's near-zero calorie count means it can be logged loosely without meaningfully affecting a calorie or macro budget, though it offers no nutritional benefit beyond hydration and flavor.
Log the diet coke in two seconds
MacroDrop tracks all of these nutrients — core and extended — from a photo, your voice or a barcode. Offline USDA database, 7,800 foods.
Values come from the USDA FoodData Central entry Beverages, carbonated, low calorie, cola or pepper-type, with aspartame, contains caffeine (FDC ID 175099), per 100 g. Daily values follow the FDA 2,000 kcal reference. Last reviewed August 2026.