
Diet Mountain Dew contains 10 calories per 20 oz, or 4 calories per 12 oz. This is because of the concentrated orange juice used in the drink. The calories are not listed on the 12 oz can because there are less than 5 calories, which is the minimum amount of calories required by the FDA to be reported on a food label. However, some sources claim that Diet Mountain Dew has zero calories.
| Characteristics | Values |
|---|---|
| Calories in 20 oz Diet Mt Dew | 10 |
| Calories in 12 oz Diet Mt Dew | 4 |
| Calories in 20 oz MTN DEW ZERO SUGAR | 0 |
| Reason for calories in Diet Mt Dew | Concentrated orange juice |
| Reason for calories in Diet Mt Dew | FDA loopholes |
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What You'll Learn
- Diet Mt Dew contains concentrated orange juice, which has calories
- Diet Mt Dew has 10 calories per 20 oz
- Diet Mt Dew has 4 calories per 12 oz
- Diet Mt Dew has more calories than Mountain Dew Zero Sugar
- Diet Mt Dew has calories, but Tic Tacs are labelled as having 'little to no calories' due to rounding down and FDA loopholes

Diet Mt Dew contains concentrated orange juice, which has calories
Diet Mt Dew contains 10 calories per 20 oz. This is because it contains concentrated orange juice, which has calories. There are 4 calories in a 12 oz can of Diet Mt Dew, so by consuming 20 oz of Diet Mt Dew one would be consuming 10 calories. This is because the calories in the concentrated orange juice are not listed on the 12 oz can as there are less than 5 calories, which is the minimum amount of calories required by the FDA to be reported on a food label.
It is important to note that the term "diet" on food labels does not always mean that a product is completely free of calories. In some cases, products can be labelled as having zero calories even if they technically do contain a small amount. This is because the number of calories they contain is so small that it is assumed the body will use more calories to digest the product than are actually in it.
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Diet Mt Dew has 10 calories per 20 oz
Mountain Dew Zero Sugar has zero calories per 20 oz, while Diet Mt Dew still contains 10 calories per 20 oz. This is because Diet Mt Dew contains more caffeine than Mountain Dew Zero Sugar.
It is also worth noting that some artificially sweetened drinks can act as mild laxatives, meaning that the calories they contain can be expended through digestion.
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Diet Mt Dew has 4 calories per 12 oz
Mountain Dew Zero Sugar is a similar product that has zero calories per 20 oz. It achieves this by including more caffeine than Diet Mt Dew. It is also possible for a product to be labelled as having zero calories if it contains fewer calories than the amount of energy required to digest it.
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Diet Mt Dew has more calories than Mountain Dew Zero Sugar
The reason that Mountain Dew Zero Sugar has zero calories is because, legally, you can call something zero calories even if it does technically contain calories, as long as you could theoretically expend more calories to digest that thing than it gives. This is why some artificial sweeteners act as mild laxatives.
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Diet Mt Dew has calories, but Tic Tacs are labelled as having 'little to no calories' due to rounding down and FDA loopholes
Diet Mt Dew has calories due to the concentrated orange juice that is used in the drink. A 12 oz can of Diet Mt Dew has 4 calories, and a 20 oz can has 10 calories. However, the calories are not listed on the 12 oz can because there are fewer than 5 calories, which is the minimum amount of calories required by the FDA to be reported on a food label.
Tic Tacs, on the other hand, are labelled as having little to no calories due to a combination of rounding down and FDA loopholes. While an individual Tic Tac may have 1 calorie, the company can claim that it has little to no calories by rounding down and taking advantage of FDA loopholes that allow them to label the product as sugar-free.
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Frequently asked questions
Diet Mt Dew contains calories because of the concentrated orange juice that is used in the drink.
There are 10 calories in a 20 oz Diet Mt Dew.
There are 4 calories in a 12 oz Diet Mt Dew.











































