How Many kJ Are in a Coke Without Sugar? A Comprehensive Guide

November 2, 2025 •

2 min read

According to official nutritional data, a standard 330ml can of Coca-Cola Zero Sugar contains a negligible amount of energy, typically around 4 kJ. This trace energy is so minimal that it is legally labeled as having zero calories, effectively answering the question of how many kJ are in a coke without sugar.

Quick Summary

Coca-Cola Zero Sugar contains an extremely low energy count of approximately 4 kJ per 330ml serving, primarily due to artificial sweeteners replacing high-energy sugar.

Key Points

Negligible Kilojoules: Coca-Cola Zero Sugar contains a minimal amount of energy, typically around 4 kJ per 330ml, allowing it to be labeled 'zero calories'.
Artificial Sweeteners: The low kJ count is achieved by replacing high-calorie sugar with high-intensity, low or non-caloric artificial sweeteners like aspartame and acesulfame potassium.
Significant Difference from Regular Coke: Regular Coca-Cola contains hundreds of kilojoules from its sugar content, a stark contrast to the negligible energy in the sugar-free version.
Zero Sugar, Zero Nutritional Value: Despite providing flavor without the energy, Coke Zero offers no significant nutritional benefits beyond hydration.
Moderation is Key: While a better alternative to sugary sodas for weight and blood sugar management, it should still be consumed in moderation as part of a balanced diet.

The Kilojoule Count in Coca-Cola Zero Sugar

A standard 330ml can of Coca-Cola Zero Sugar typically contains around 4 kJ, a negligible amount often labeled as 'zero calories' due to its minimal metabolic impact.

Why Sugar-Free Coke has so few Kilojoules

The low energy content stems from the replacement of high-kJ sugars with high-intensity artificial sweeteners like aspartame and acesulfame potassium. These sweeteners require only tiny amounts, provide minimal or no energy, and do not affect blood sugar levels.

Coca-Cola Zero Sugar vs. Classic Coca-Cola: A Kilojoule Comparison

Comparing sugar-free Coke to regular Coca-Cola highlights the significant energy difference:


Nutritional Aspect	Coca-Cola Zero Sugar (330ml can)	Classic Coca-Cola (330ml can)
Energy	Approx. 4 kJ (1 kcal)	Approx. 580 kJ (140 kcal)
Sugar	0 g	Approx. 35 g
Carbohydrates	0 g	Approx. 35 g
Fat	0 g	0 g
Protein	0 g	0 g

This table demonstrates that the substantial energy in regular Coke is entirely due to its sugar content, which is absent in the sugar-free version.

Ingredients Beyond Sweeteners

Other ingredients in Coca-Cola Zero Sugar contribute to its final form, including carbonated water, phosphoric acid for tanginess, caramel color, natural flavors, and often caffeine.

The Role of Sweeteners and Preservatives

A blend of sweeteners is used to mimic the taste of sugar. Preservatives like potassium benzoate maintain freshness. The safety of these ingredients in moderation is generally accepted, though often discussed. You can find more information on zero-calorie products Healthline.

The Bottom Line on Sugar-Free Coke

Coke Zero serves as a low-energy alternative to sugary sodas. Its minimal kilojoule count makes it a popular choice for weight management and for individuals with diabetes as it doesn't affect blood sugar levels. However, it provides no nutritional value beyond hydration and should be consumed in moderation as part of a balanced diet.

Conclusion

In conclusion, a Coke without sugar contains a very low number of kilojoules, about 4 kJ per 330ml can. This is achieved by using artificial sweeteners instead of sugar, resulting in a product often labeled as 'zero calories'. It offers the flavor of classic Coke without the high energy load, making it a viable option for those controlling sugar and calorie intake. However, it's best enjoyed in moderation.

Frequently Asked Questions

A can of Coke Zero contains a very small amount of kilojoules, usually around 4 kJ per 330ml serving. Food labeling regulations in many countries permit this to be rounded down to zero since the amount is nutritionally insignificant.

Coke Zero achieves its sweet taste by using a blend of high-intensity artificial sweeteners, such as aspartame and acesulfame potassium. These sweeteners are much sweeter than sugar, so only tiny, non-caloric amounts are needed.

While Coke Zero is a better option than regular soda for managing sugar and calorie intake, it offers no nutritional value. Health experts recommend consuming it in moderation and prioritizing water and other nutrient-dense beverages.

Artificial sweeteners in products like Coke Zero are considered safe by regulatory bodies for consumption within normal limits. However, some studies suggest potential links to metabolic changes, although more human research is needed.

In contrast to the sugar-free version, a 330ml can of classic Coca-Cola contains a significant amount of energy, approximately 580 kJ, all from its sugar content.

The main ingredient in all Coca-Cola products, including the sugar-free version, is carbonated water.

Yes, most versions of Coca-Cola Zero Sugar contain caffeine. Some regions also offer a caffeine-free version.