How Much Popcorn is in 1 oz? A Comprehensive Guide
                                
                                
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                                    4 min read                                
                            
                                According to the USDA, 1 ounce equivalent of whole grains is equal to 3 cups of popped popcorn, though the actual yield from 1 oz of unpopped kernels can vary. The conversion from a small weight of kernels to a large volume of fluffy snack is a fascinating process that depends on several key variables.