How Many Calories Are in 100g of Active Popcorn? A Complete Nutritional Guide
                                
                                
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                                    6 min read                                
                            
                                An average 100g serving of plain air-popped popcorn contains around 382 calories, while the same amount of a popular, packaged 'active' microwave variety, like Act II Butter, can reach nearly 450 calories. This significant difference highlights the impact of added ingredients on the nutritional content of this classic snack.