which is less calories tonic or soda
The only calories in a vodka soda, which is made from vodka and soda water, come from the liquor itself. One fluid ounce of vodka contains 64 calories, according to the USDA National Nutrient Database. Your cocktail will vary slightly in calories depending on how much vodka the bartender pours. Soda water is calorie-free. Just be sure not to mix your vodka with tonic water, which is clear and fizzy like soda water, but contains 83 calories and 21.5 grams of sugar per serving. A squeeze of lemon or lime to flavor your drink will add just a couple extra calories.