How Many Calories and Sugar Are in a Lemon?
                                
                                
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                                    4 min read                                
                            
                                According to USDA data, a single, raw lemon contains approximately 18.8 calories and just 1.6 grams of sugar. This makes lemons one of the lowest-calorie and lowest-sugar fruits available, a key reason they are a popular ingredient in healthy recipes and drinks.