how many calories are in a gram of carbohydrates
Carbohydrates have four calories per gram. Multiply the number of carbohydrates by four to figure out how many calories there are. For example, if a product had nine grams of carbohydrates, you would use the equation (9 x 4) to get a total of 36 calories. You would use four as your multiplier because there are four calories in every one gram of carbohydrate.