Roasted soy nuts are made by soaking dried soybeans in water until soft, then coating them with vegetable oil and baking until crispy. With a peanut-like texture, soy nuts are highly nutritious, providing many calories per serving.
The U.S. Department of Agriculture indicates that a 1/2-cup serving of roasted soy nuts provides 233 calories. Approximately 106 calories come from fats, while proteins deliver around 65 calories and carbohydrates comprise 62 calories per serving.
The USDA reports that a 1/2-cup serving of soy nuts weighs 46 grams. This serving contains around 16 g of protein, 15.5 g of carbohydrates and 12 g of fats. Water and nutrients make up the rest.
Soy nuts also provide important vitamins, such as vitamin B6, C and K, folate, niacin, pantothenic acid, riboflavin, and thiamin, the USDA notes. Dietary minerals within the snack food include calcium, copper, iron, magnesium, phosphorus, potassium and selenium.
Though a roasted soy nuts provide a substantial amount of fats, most consist of monounsaturated or polyunsaturated fats, which the Mayo Clinic identifies as healthier fats. The American Heart Association recommends keeping your daily fat consumption to less than 25 percent of total caloric intake.