How many calories does an 8 oz margarita have? A comprehensive guide to cocktail calories
                                
                                
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                                    4 min read                                
                            
                                According to USDA data, an average 8-ounce margarita contains around 274 calories, but this figure can vary dramatically depending on the ingredients and preparation. Understanding how many calories does an 8 oz margarita have requires looking beyond the liquor to the sugary mixers and liqueurs that are often the real culprits behind a high-calorie count.