Calories in Root Beer
1 fl oz of root beer (31 g) has 13 calories, with 0 g of protein, 0 g of fat and 3.3 g of carbohydrates. Per 100 grams, root beer has 41 calories.
Most of the calories in root beer come from carbohydrates (100%). Root beer is low in calories. It has more calories per gram than 45% of the 192 drinks in our database.
Root Beer Calorie Calculator
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Root Beer calories by serving size
Common amounts of root beer with calories and macros. Tap a row for its full nutrition page.
Root Beer vs similar foods
Calories per 100 g compared with other drinks.
Root Beer: common questions
How many calories are in 1 fl oz of root beer?
1 fl oz of root beer (31 g) has 13 calories.
How many calories are in 100 grams of root beer?
100 grams of root beer has 41 calories, 0 g of protein, 0 g of fat and 11 g of carbohydrates.
How much protein is in root beer?
Root beer has 0 g of protein per 100 g. 1 fl oz of root beer gives you 0 g.
Is root beer high in calories?
Root beer has 41 calories per 100 g. It has more calories per gram than 45% of the 192 drinks in our database. A 2,000 calorie day fits about 48.8 kg of it.
More about root beer
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Weights and conversions
Source: USDA FoodData Central, SR Legacy. FDC ID 171871. Original description: Beverages, carbonated, root beer. Portion weights are USDA household measures.