Calories in Coca-Cola
A 12 oz can of regular Coca-Cola is 140 kcal with 39g of sugar. The 20 oz bottle is 240 kcal. Diet/Zero versions: 0 kcal.
Nutrition by portion size
| Portion | kcal | Carbs (g) | Protein (g) | Fat (g) | Fiber (g) |
|---|---|---|---|---|---|
| 1 can (12 oz / 355ml) | 140 | 39 | 0 | 0 | — |
| 1 small bottle (8 oz) | 95 | 26 | 0 | 0 | — |
| 20 oz bottle | 240 | 65 | 0 | 0 | — |
| 1 liter bottle | 420 | 113 | 0 | 0 | — |
| 2 liter bottle | 840 | 226 | 0 | 0 | — |
| Diet Coke / Coke Zero (12 oz) | 0 | 0 | 0 | 0 | — |
Glycemic index
63
About these numbers
Regular Coca-Cola provides pure liquid sugar with no nutritional value and no satiety contribution. A 12 oz can has 39g of sugar — about 10 teaspoons. The 2020 Imamura et al. meta-analysis found each additional 12 oz of sugar-sweetened beverage per day was associated with 18% higher T2D incidence. Diet Coke and Coke Zero are essentially calorie-free; the long-term effects of artificial sweeteners on health are still debated but the calorie advantage for weight loss is real.
Use the calculators
- Calorie Deficit Calculator — find how this portion fits your daily target
- Glycemic Load Calculator — compute exact GL for any serving size
- Macro Calculator — set protein, carb, fat splits for cut/maintain/bulk
- Net Carbs Calculator — useful for keto and T1D insulin dosing
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Frequently asked questions
- How many calories in a Coke?
- 12 oz can: 140 kcal. 20 oz bottle: 240 kcal. 1 liter: 420 kcal. Diet Coke / Coke Zero: 0 kcal. The variance is enormous based on serving size.
- Will switching to Diet Coke help me lose weight?
- Probably. The 2014 Peters et al. RCT showed Diet Coke vs water during weight loss produced similar weight loss results — neither caused weight gain. The "diet soda makes you fat" claim isn't supported by RCTs. The 2020 Lobach review noted artificial sweeteners are likely safe at typical consumption. For practical weight loss: substituting Diet Coke for regular saves 140 kcal per can.
- How much sugar in Coca-Cola?
- 39g per 12 oz can — about 10 teaspoons. WHO recommends limiting added sugar to <25g/day for ideal health. One can exceeds that recommendation.
- Is Coca-Cola the worst beverage?
- Among worst common beverages alongside sweet tea, sports drinks, and energy drinks. Per calorie, it provides zero nutrition. For metabolic health, complete elimination is the highest-leverage simple change. If craving the carbonation/flavor, Diet Coke or sparkling water with lime are calorie-free alternatives.
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