Although the calorie content of store-bought peanuts varies depending on how they have been processed and seasoned, plain, dry-roasted peanuts without any salt contain 166 calories per ounce. Saltless oil-roasted peanuts contain 163 calories per ounce, whereas raw peanuts contain 160 calories per ounce.
Peanuts contain more calories per weight than apples, bread or even glazed donuts. However, they are rich in vitamins and minerals, such as niacin and magnesium, which offsets their caloric load in terms of nutritional quality. All types of peanuts are energy-dense, but they are also very satiating, which discourages overconsumption. Peanuts, due to their high calorie count and high number of nutrients, are commonly used as animal fodder.