How Many Calories for Coke Zero?
1 can (330ml) of coke zero contains around 1 calories (0.3 kcal per 100g). Coke Zero is classified as NOVA 4 (ultra-processed).
Nutrition per 100g
| Nutrient | Per 100g | Per serving |
|---|---|---|
| Energy | 0.3 kcal / 1.3 kJ | 1 kcal |
| Protein | 0g | 0g |
| Carbohydrates | 0g | 0g |
| of which sugars | 0g | — |
| Fat | 0g | 0g |
| of which saturated | 0g | — |
| Fibre | 0g | — |
| Salt | 0.01g | — |
Serving size: 1 can (330ml) · Source: Tesco product page, October 2025
Glucose impact
Very Low
Glucose risk
Coke Zero contains zero carbohydrates and zero sugar. It has no measurable effect on blood glucose levels. The artificial sweeteners aspartame and acesulfame K are non-caloric and do not trigger an insulin response in the same way sugar does, though some research suggests they may affect gut microbiome and insulin sensitivity over time.
Processing level
Despite containing zero calories and zero sugar, Coke Zero is classified as NOVA 4 because it contains multiple industrial additives not found in domestic kitchens: aspartame and acesulfame K (artificial sweeteners), phosphoric acid (acidity regulator), caramel colour (E150d), and unspecified 'natural flavourings'. These are hallmarks of ultra-processed formulations designed in laboratories, not recipes you could reproduce at home.
Coke Zero at Tesco
Source: Tesco product page, October 2025
5 UPF markers
5 UPF markers
5 UPF markers
5 UPF markers
5 UPF markers
*Prices were correct at the time of collection and may have since changed. Check Tesco.com for current pricing.
What to watch for when shopping
Coke Zero is a textbook example of why 'zero calories' and 'healthy' are not the same thing. It scores NOVA 4 across every single variant — there is no unprocessed version of this product. The ingredient list includes carbonated water, colour (caramel E150d), phosphoric acid, sweeteners (aspartame, acesulfame K), natural flavourings including caffeine, and citric acid. If you want a zero-calorie drink without the ultra-processing, sparkling water with a squeeze of lemon is the genuine NOVA 1 alternative. Budget tip: the 2L bottle at £2.15 (£1.08/L) is far cheaper per litre than cans at £1.61/L.
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