How many calories are in a piece of crispy rice?
                                
                                
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                                    4 min read                                
                            
                                A single Kellogg's Rice Krispies Treat original bar contains between 90 and 130 calories, but the total count can vary widely based on the product and portion size. The number of calories in a piece of crispy rice depends heavily on its form, ingredients, and preparation method, from a serving of plain cereal to a dense, sugary treat.