What is the size of a small potato?
                                
                                
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                                    4 min read                                
                            
                                According to the USDA's Agricultural Marketing Service, potatoes are sorted into official grades based on size, with 'small' or 'size C' potatoes typically measuring less than 1.5 inches in diameter. However, terms like 'small' can also refer to immature potatoes harvested early, known as 'new' or 'baby' potatoes.