google_ad_slot = "9456429844"; The food with the highest carbs content per typical serving is Bananas, raw which contains 51.39 g in 1 cup, mashed (or 225 g). Get full nutrition facts and other common serving sizes of Bananas including 1 oz and 1 extra small. Find nutrition facts for over 2,000,000 foods. Any duplication or distribution of the information contained herein is strictly prohibited. The basic type of a banana is Bananas, raw, where the amount of carbs in 100g is 22.84 g. The percentage of the recommended daily allowance (RDA) for carbs is based on a 130 g RDA level for a mature adult. 0 %--Fat. //-->. 95 % 20g Carbs. Sign Up. You might be wondering how many carbs in a banana there are because you’re on a low-carb diet. 2,000 calories a day is used for general nutrition advice. Unripe (Green) Bananas Contain More Resistant Starch. Carbohydrates.