How Many Carbs Are in One Cooked Onion? A Nutrition Diet Guide
                                
                                
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                                    4 min read                                
                            
                                According to the USDA, a raw onion is roughly 9–10% carbohydrates by weight, but how many carbs are in one cooked onion can differ due to water loss. Understanding this concentration is key for those monitoring their carbohydrate intake, especially on a keto or low-carb nutrition diet.