How many calories are in 100g of popped popcorn? A nutritional guide
                                
                                
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                                    4 min read                                
                            
                                For a whole-grain snack, air-popped popcorn contains approximately 387 calories per 100g. However, the calorie count can vary significantly based on preparation methods and added ingredients, impacting exactly how many calories are in 100g of popped popcorn.