Diet Coke Nutrition Facts: Calories, Ingredients & Health

Comprehensive profile

When it comes to making informed choices about what you drink, few products inspire more debate and curiosity than Diet Coke. Whether you’re switching from regular cola, pursuing weight management, or simply seeking a crisp, refreshing beverage with zero sugar, understanding the nutrition facts behind Diet Coke is essential. This in-depth guide separates myth from fact, offering a clear, research-backed view into what’s actually inside each can and how it fits into a healthy lifestyle.

Key benefits

Z

Zero Calories

Diet Coke provides the crisp cola flavor you crave with no calories per serving, eliminating the caloric impact of traditional sodas.

S

Sugar-Free Formula

Sweetened with aspartame and acesulfame potassium, Diet Coke delivers its taste without the sugar spike or glycemic load.

C

Caffeine Boost

Each can offers a mild caffeine kick—enough to refresh your mind, but less than a typical cup of coffee or energy drink.

V

Variants to Suit Every Taste

From classic to caffeine-free, lime, cherry, and more, Diet Coke's lineup means there’s a zero-calorie version for almost every palate.

Detailed nutrition facts

Diet Coke Nutrition Table

The following table summarizes the standard nutrition facts for a typical 12 fl oz (355 ml) can of Diet Coke in the United States. Values may vary slightly for international formulations or flavored variants—always check the ingredient list on your local packaging for specifics.

Nutrient	Per 12 fl oz (355 ml)
Calories	0
Total Fat	0 g
Sodium	40 mg
Total Carbohydrate	0 g
Total Sugars	0 g
Added Sugars	0 g
Protein	0 g
Caffeine	46 mg

Note: Flavored Diet Coke options such as Cherry, Lime, and Caffeine-Free have virtually identical nutrition facts, with minor variations in sodium or caffeine content. You can compare them side-by-side on our Diet Coke vs Coke Zero page.

Health insights

What Diet Coke's Nutrition Facts Mean for Your Wellness

Diet Coke's unique place in the beverage landscape is a result of its zero-calorie, sugar-free profile. For many, it's a tool for reducing daily caloric intake, managing blood sugar levels, or simply enjoying a guilt-free soda. But what does the nutrition label really reveal about its impact on your health?

Weight Management: By eliminating sugar, Diet Coke removes a major source of empty calories from your routine. Studies suggest that switching from regular soda to a no-calorie alternative can support weight loss or maintenance goals, provided other dietary habits are balanced.
No Glycemic Impact: Because it contains no sugar or carbohydrates, Diet Coke does not raise blood glucose levels—a crucial point for people living with diabetes or those monitoring glycemic load.
No Nutritional Value: Diet Coke delivers on taste and refreshment, but offers no vitamins, minerals, or fiber. It's calorie-free, but also nutrient-free.
Artificial Sweeteners: The sweet taste comes from aspartame (and sometimes acesulfame potassium), which have both been the subject of extensive safety reviews by global health authorities. For most people, moderate intake is considered safe, though individuals with phenylketonuria (PKU) should avoid aspartame.

Ultimately, Diet Coke can be part of a balanced lifestyle when consumed in moderation. If you’re sensitive to caffeine or artificial sweeteners, consider opting for Caffeine-Free or reviewing is Diet Coke healthy? for a deeper health analysis.

Product variants

Comparison of Diet Coke Variants

O

Original Diet Coke

The bold, crisp classic that started it all. Zero calories, 46 mg caffeine per 12 oz, sweetened with aspartame.

F

Flavored Diet Coke

Options like Cherry, Lime, and Ginger Lime add a twist to the original formula—without adding sugar or calories.

C

Caffeine-Free Diet Coke

All the taste, none of the caffeine. Ideal for late nights or those sensitive to stimulants.

I

International Blends

Diet Coke is sold as Coca-Cola Light in many countries, sometimes with different sweetener blends like saccharin or cyclamate.

By the numbers

Diet Coke Facts & Stats

0

Calories per 12 oz

46 mg

Caffeine (per can)

0 g

Sugar

1982

Year introduced

Frequently asked

Diet Coke Nutrition FAQs

How many calories are in Diet Coke?

A standard 12 fl oz (355 ml) can of Diet Coke contains zero calories. Larger bottles and different serving sizes also contain zero calories per serving because Diet Coke uses calorie-free sweeteners instead of sugar.

What sweeteners are used in Diet Coke?

Diet Coke in the U.S. primarily uses aspartame as its sweetener, but some variants also include acesulfame potassium. Sweetener blends may differ internationally, so always check your country's label.

Does Diet Coke have any sugar?

No, Diet Coke contains zero sugar. Instead, it relies on artificial sweeteners like aspartame and sometimes acesulfame potassium to provide its sweetness without the calories or glycemic impact.

Is there caffeine in Diet Coke?

Yes, a 12 oz can of Diet Coke contains approximately 46 mg of caffeine. This is less than regular Coke (about 34 mg per 12 oz) and less than most diet colas, but still enough to provide a mild stimulant effect.

Are there any nutritional benefits or downsides to drinking Diet Coke?

Diet Coke offers the benefit of zero calories and sugar, which can be helpful for weight management. However, it does not provide vitamins, minerals, or fiber, and its artificial sweeteners have been debated in health research. For most people, moderate consumption is considered safe.