According to FatSecret, a regular hot dog on its own without a bun contains between 175 and 190 calories per serving. When served on a bun and topped with ketchup and mustard, a hot dog contains around 284 calories.
Turkey hot dogs contain about 132 calories, while chicken hot dogs contain about 150 calories. Of the calories in a plain hot dog, on average, one hot dog contains about 15 grams of fat, 2.5 grams of carbohydrates and 7 grams of protein. There are also fat-free and low-fat versions of hot dogs that contain as little as 54 calories per hot dog.