How Many Calories Are in a 44 Ounce Diet Mountain Dew?
                                
                                
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                                    4 min read                                
                            
                                According to nutritional data from a retailer, a 44-ounce fountain Diet Mountain Dew contains 20 calories. While many expect zero calories, this article will explain why a 44 ounce Diet Mountain Dew has a small, yet measurable, calorie count and how it compares to other versions.