20 carbs equals how many net carbs?
Foods with fiber and sugar alcohols So, a food with 20 g of total carbs may contain 10 g of fiber and 10 g of sugar alcohols. Subtract all 10 g of the fiber and 5 g of the sugar alcohols. Next, subtract this total of 15 g from the 20 g of total carbs. This leaves 5 g of net carbs.