A standard 12-ounce can of regular soda contains roughly 140 to 155 calories, with nearly all of those calories coming from sugar. Coca-Cola Classic and Pepsi both clock in at 155 calories per can, while Dr Pepper comes in at 150. Diet and zero-sugar versions contain fewer than 5 calories per can.
Calories by Brand and Flavor
Most mainstream colas land in a tight range. Coca-Cola Classic and Pepsi both have 155 calories in a 12-ounce can, and Dr Pepper has 150. Lemon-lime sodas like Sprite tend to run slightly lower, while citrus-heavy options like Mountain Dew sit at the higher end due to extra sugar. A 12-ounce Mountain Dew contains about 170 calories.
The differences between brands are small enough that for practical purposes, you can estimate any regular 12-ounce soda at about 140 to 170 calories. The variation comes down to sugar content, which ranges from about 35 to 46 grams per can depending on the brand and flavor.
Where Those Calories Come From
Regular soda has no fat, no protein, and no meaningful vitamins or minerals. The calories come entirely from added sugar, typically high-fructose corn syrup in the U.S. or sucrose elsewhere. A can of Coca-Cola contains about 39 grams of sugar, Pepsi about 41 grams, and Mountain Dew around 46 grams. Each gram of sugar provides 4 calories, so the math is straightforward: multiply the sugar grams by four and you get almost exactly the calorie count on the label.
To put those sugar numbers in context, the American Heart Association recommends no more than 36 grams of added sugar per day for men and 25 grams for women. A single can of Coca-Cola exceeds the entire daily recommendation for women and nearly hits the cap for men, before accounting for sugar from any other food or drink that day.
Diet and Zero-Sugar Versions
Diet sodas and their “zero sugar” counterparts use artificial or non-nutritive sweeteners (aspartame, sucralose, stevia, or a blend) instead of sugar. Under FDA rules, a product can be labeled “zero calories” as long as it contains fewer than 5 calories per serving. That means a can of Diet Coke or Coke Zero technically could have a calorie or two from trace ingredients, but the number is small enough that it rounds to zero on the nutrition label.
The main difference between “diet” and “zero sugar” branding is flavor profile, not calorie content. Both types aim for the same near-zero calorie count. Coke Zero was formulated to taste closer to regular Coca-Cola, while Diet Coke has its own distinct flavor. Nutritionally, they’re essentially the same.
Can Size Matters More Than You Think
Not every soda can is 12 ounces. Mini cans, which have become popular in the U.S., hold 7.5 ounces and contain about 90 calories. That’s a 40% reduction simply from the smaller serving. On the other end, tall 16-ounce cans push past 200 calories, and 20-ounce bottles (often sold at gas stations and convenience stores) reach 240 to 260 calories.
If you’re outside the United States, the standard can is different too. In Europe, cans are 330 milliliters (about 11.2 ounces) rather than the American 355 milliliters (12 ounces). That smaller European can shaves off roughly 10 to 15 calories compared to the U.S. version of the same drink. In Australia, the standard can is 375 milliliters, slightly larger than the American one.
How Soda Calories Add Up
One can of soda per day adds up to about 1,085 calories per week, or roughly 56,500 calories over a year. Since a pound of body fat stores about 3,500 calories, that’s the equivalent of about 16 pounds of energy intake annually from a single daily soda, all else being equal. This is why cutting out regular soda is one of the simplest changes people make when trying to reduce calorie intake: it removes a significant source of calories without requiring you to eat less food.
Switching from a regular 12-ounce can to a 7.5-ounce mini can saves about 65 calories per drink. Switching to a diet or zero-sugar version eliminates nearly all of them. Even choosing a lemon-lime soda over a Mountain Dew trims 20 to 30 calories per can, though at that point the sugar content is still high enough that the health difference is marginal.