Coke Zero Sugar Calories & Nutrition Facts (12 oz Can)

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Coke Zero Sugar has 0 calories, 0g sugar, 0g carbs and 40mg sodium in a 12 fl oz can, plus 34mg of caffeine. It is sweetened with aspartame and acesulfame potassium, so it adds no carbohydrate to your day and does not raise blood sugar directly. Regular Coke has 140 calories and 39g sugar in the same can.

Quick Nutrition Facts

Per 1 can (12 fl oz, 355 mL)

Nutrient	Amount
Calories	0 kcal
Protein	0g
Carbohydrates	0g
Fiber	0g
Sugars	0g
Fat	0g
Sodium	40 mg

Macronutrient Breakdown

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NUTRITIONIST'S INSIGHT

A can of Coke Zero Sugar contributes nothing to your calorie or carb count, which makes it an easy swap for regular cola if the goal is cutting added sugar. The tradeoffs are small: 34mg of caffeine (about a third of a cup of coffee), 40mg of sodium, and phosphoric acid, which is hard on tooth enamel if you sip all day. The WHO's 2023 guideline advises against relying on non-sugar sweeteners for long-term weight control, so treat it as a bridge away from sugary drinks and not a daily hydration source. Water or sparkling water should still be most of what you drink.

Myth Busters

MYTH #1: Coke Zero Sugar spikes blood sugar like regular Coke

TRUTH: The label shows 0g carbohydrate and 0g sugar per can, so there is nothing for the body to convert into glucose. Regular Coke has 39g of sugar per 12 fl oz can. Coca-Cola Zero Sugar: Nutrition Facts & Ingredients; Coca-Cola Original: Nutrition Facts & Ingredients

MYTH #2: Aspartame in diet soda is proven to cause cancer

TRUTH: In July 2023 IARC classified aspartame as possibly carcinogenic (Group 2B) based on limited evidence, while JECFA kept the acceptable daily intake at 40 mg per kg of body weight. A 70 kg adult would need more than a dozen cans a day to reach that limit. Aspartame hazard and risk assessment results released; Aspartame and Other Sweeteners in Food

MYTH #3: Zero-calorie soda guarantees weight loss

TRUTH: The WHO's 2023 guideline found no long-term body-fat benefit from non-sugar sweeteners in adults or children and advises against using them for weight control. Swapping a sugary soda for Coke Zero cuts calories that day, but it does not carry a weight-loss guarantee. WHO advises not to use non-sugar sweeteners for weight control; WHO guideline on the use of non-sugar sweeteners

MYTH #4: Coke Zero Sugar has no caffeine

TRUTH: A 12 fl oz can contains 34mg of caffeine. Coca-Cola sells a separate Caffeine Free version with the same zero calories and sweeteners. Coca-Cola Zero Sugar: Nutrition Facts & Ingredients

MYTH #5: Coke Zero Sugar is the same recipe as Diet Coke

TRUTH: They are separate formulas with different flavor profiles. Both are zero-calorie, but US Diet Coke is sweetened with aspartame alone, while Coke Zero Sugar uses aspartame, acesulfame potassium and stevia extract and was built to taste closer to classic Coca-Cola. Coca-Cola Zero Sugar: Nutrition Facts & Ingredients

NutriScore by Health Goals

Health Goal	NutriScore	Why This Score?
Weight Loss		Zero calories per can makes it a useful replacement for a 140-calorie regular cola. The grade stops at B because the WHO found no long-term weight benefit from sweeteners and it supplies no satiety. Coca-Cola Zero Sugar: Nutrition Facts & Ingredients; WHO advises not to use non-sugar sweeteners for weight control
High Protein		0g protein per can. It contributes nothing toward a protein target. Coca-Cola Zero Sugar: Nutrition Facts & Ingredients
Low Carb / Keto		0g carbs and 0g sugar per can, so it fits any carb limit including strict keto. Coca-Cola Zero Sugar: Nutrition Facts & Ingredients
Heart Health		Only 40mg of sodium and no fat, but the WHO guideline flags possible long-term cardiovascular associations with regular sweetener use, based on observational data. Coca-Cola Zero Sugar: Nutrition Facts & Ingredients; WHO advises not to use non-sugar sweeteners for weight control
Diabetes Management		No carbohydrate means no direct glucose load, so it is a better choice than regular cola. The WHO guideline excludes people with existing diabetes from its recommendation against sweeteners. Coca-Cola Zero Sugar: Nutrition Facts & Ingredients; WHO advises not to use non-sugar sweeteners for weight control
Nutrient Density		No vitamins, fiber, protein or meaningful minerals; the label lists only 60mg of potassium. Coca-Cola Zero Sugar: Nutrition Facts & Ingredients

PERSONALIZED NUTRITION

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Blood Sugar Response - Coke Zero Sugar (1 can / 355 mL)

With 0g carbohydrate and 0g sugar, Coke Zero Sugar gives the body no glucose to absorb, so a healthy adult's blood sugar stays near its fasting baseline for the full 2-hour window. Any small movement comes from the rest of the meal, not the can. Coca-Cola Zero Sugar: Nutrition Facts & Ingredients; WHO advises not to use non-sugar sweeteners for weight control

Estimated Blood Glucose Response (mg/dL)

Illustrative baseline for a healthy adult drinking one can on its own. Meals eaten with it, and individual insulin sensitivity, change the real curve.

How to flatten the spike

Count it as 0g carbs when logging, and carb-count the food you drink it with.
Drink it with a meal that has protein and fiber so the meal's carbs rise more slowly.
Replace sugary drinks with it rather than adding it on top of them.
Alternate with water or sparkling water to keep total sweet-taste exposure down.

Cultural Significance

Coca-Cola launched Coke Zero in 2005 as a zero-sugar cola aimed at people who found Diet Coke's taste too different from the original, and relabeled it Coca-Cola Zero Sugar in the US in 2017 with a reformulated recipe. It is now sold in more than 150 countries and is a common order in fast-food restaurants, bars and gyms as a mixer-friendly, zero-calorie cola. In countries with soft-drink sugar taxes it is a common swap for regular cola.

Compare & Substitute

Coke Zero Sugar vs Similar Foods

Nutrient	Coca-Cola Original (12 fl oz)	Diet Coke (12 fl oz)	Pepsi Zero Sugar (12 fl oz)	Plain sparkling water (12 fl oz)
Calories	140 kcal	0 kcal	0 kcal	0 kcal
Protein	0g	0g	0g	0g
Carbohydrates	39g	0g	0g	0g
Fat	0g	0g	0g	0g

Frequently Asked Questions

How many calories are in Coke Zero Sugar?

A 12 fl oz can has 0 calories, 0g sugar and 0g carbohydrate according to the US label. Larger bottles keep zero calories; sodium and caffeine scale with volume.

Does Coke Zero Sugar have caffeine?

Yes, 34mg per 12 fl oz can, roughly a third of a cup of brewed coffee. Choose Coca-Cola Zero Sugar Caffeine Free if you want none.

What sweeteners are in Coke Zero Sugar?

The US ingredient list shows aspartame, acesulfame potassium and stevia extract. It also contains caramel color, phosphoric acid, potassium benzoate, natural flavors and potassium citrate, and carries a phenylketonuria warning.

Can I drink Coke Zero Sugar with diabetes?

It contains no carbohydrate, so it does not raise blood glucose directly and fits carb-counting plans as 0g. The WHO's sweetener guideline does not apply to people with pre-existing diabetes. Ask your care team about daily limits if you drink several a day.

Is aspartame in Coke Zero Sugar safe?

JECFA reaffirmed an acceptable daily intake of 40 mg per kg of body weight in 2023, and IARC listed aspartame as possibly carcinogenic (Group 2B) on limited evidence. The FDA says it did not find safety concerns at current levels of use.

Is Coke Zero Sugar better than regular Coke?

For calories and sugar, yes: 0 versus 140 calories and 0g versus 39g sugar per 12 fl oz can. Both have the same acidity and similar caffeine, so tooth wear is not much different.