How Many Calories in a 12 Inch Meatball Sub? Unpacking the Nutrition
                                
                                
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                                    4 min read                                
                            
                                A 12-inch meatball sub from a popular chain can contain well over 1,000 calories, but the exact number varies drastically depending on the ingredients. Understanding how many calories in a 12 inch meatball sub requires examining the components, including the bread, meatballs, sauce, and cheese, which all contribute significantly to the final count.