How Many Carbs in a Banana: What You Need To Know

How Many Carbs in a Banana

Banana is one of the most popular fruits on Earth. This has a very bright yellow color. They are rich in nutrients and contain carbohydrates. If you want to know how many carbs in a banana, they must ripen. Green bananas contain starch, which is converted into sugar when the banana is ripening so the exact amount of carbs can be measured in a ripen banana. They are famous and popular fuel for athletes due to the number of carbs present in bananas and the reason that they are easy on the stomach. 

Generally, we know that bananas are extremely healthy and nutritious fruit, but have you wonder how many carbs in a banana? They are exclusively composed of water and carbs. Ripening of banana has a great effect on the number of carbs in banana. An avg. sized banana can contain 25 g carbs. Unripe bananas contain less carb as compared to ripen.

Carb is the main nutrient in bananas but the composition of this carb changes. Bananas also contain fiber, vitamin B6, vitamin C, Manganese, Potassium, Magnesium, Folate, Copper, Riboflavin. 

All the bananas do not have equal amounts of nutrients and calories. The amount of calories present in them usually depends on the size of the banana. Average sized banana contains 100 calories. Let’s examine the chart below know how many calories and how many carbs in a banana are there:  

  Size Weight Calories Carbohydrates
Extra-small <6” 81grams 72 19
Small 6-7” 101grams 90 23
Medium 7-8” 118grams 105 27
Large 8-9” 136grams 121 31
Extra large 9” 152grams 135 35
Sliced 1 cup 150grams 134 34.2
Mashed 1 cup 225grams 200 51.3


 Nutrients in the banana

Nutrients Amount
Calories 89
Water 75%
Protein 1.1 g
Carbs 22.8 g
Sugar 12.2 g
Fiber 2.6 g
Fat 0.3 g


Banana belongs to the Musaceae family. The banana plant grows 10-26 ft. tall. They grow in cluster form containing 50-150 bananas. They are used to grow in warmer areas of the world. Banana makes you feel fuller for a longer time. There is a reason for this. 1st of all, the carbohydrates of bananas are different from other carbohydrates in terms of fibers. Banana also contains starch and fiber in addition to carbohydrates. Carbs get digested easily and quickly, but fiber will slow down the release into the bloodstream. 

Bananas also contain a large number of carbs and hence contain a greater glycemic index and load. So, it will greatly increase the blood sugar level. This is the reason that banana is considered a smart choice to maintain their sugar level. 

Sucrose, glucose, and fructose are used to occur in a ripe banana. 

How many carbs in a Banana? Benefits of Banana Carbs

Banana is rich in nutrients like starch, fiber, and carbohydrates that’s why they are the premier choice of everyone especially athletes. There are many benefits of banana carbs like the following:

Source of Energy

As we know that carbohydrates are the main source of fuel for a body. After taking the food, the body will break it into sugar and starch which are ultimately converted into glucose. This glucose is taken or absorbed by the blood. So, glucose is also called sugar. This blood sugar is used by the body for different functions. It is used to sharpens your brain, which will control all other functions of the body. 

ATP is the source of energy in the human body. This ATP (adenosine triphosphate) is formed from carbohydrates, protein, and fats. In this way, carbohydrates in the form of ATP will be used for proper cell functioning.

Many fruits and animals are a source of carbohydrates, and a banana is one of them. Stored carbohydrates will be converted into ATP when eaten. And this will be broken into glucose in the body. 

Aids Digestion

As banana contains fibers and this fiber helps in the digestion process. It keeps the rate of digestion at the optimum rate that our body needs. Bananas have low glycemic index GI ranges from 42-58, which means it has a low impact on the blood sugar level.

Ripen bananas contain more pectin which will help to stabilize the carbohydrate digestion. Pectin is complex than fiber. As the banana is ripe, water-soluble pectin is present in excess and help to digest carbohydrate. 

Mental and Physical Boost for Athletes

Bananas are energy boost foods. Athletes prefer to eat bananas due to their energy source and easy digestion. A banana will enhance the exercise performance of the athletes. It should be taken a few hours before the physical exercise for obtaining adequate energy without being uncomfortable.

Stabilize blood sugar

Resistant starch that is present in the unripe banana aids diabetic patients in stabilizing their blood sugar levels. Resistant starch works like fiber. It is used to feed bacteria in the gut that will eventually convert them into short-chain fatty acids. 

Lower blood pressure 

It contains a significant amount of potassium that will be a good source of potassium. It helps to lower blood pressure in the people suffering from the issue of elevated blood levels.

Act as antioxidant

Dopamine present in the banana act as an antioxidant. It does not affect the mood as it can’t cross the bloodstream. 

Reduce the risk of Heart attack

Antioxidants present in bananas act greatly reduce the risk of a heart attack. For example, flavonoids.

Precaution about Banana

Bananas are a good source of energy, but you should be aware of how many carbs in a banana? Because high blood sugar level is injurious for health. It can cause many other problems. Moreover, some people are allergic so, they should not intake bananas in their diet. They are notorious for being too much sugary. But in truth, they do not contain much concentration as compared to other fruits.


Banana is considered a powerhouse of energy. An avg. sized banana can contain 25 g carbs. Unripe bananas contain less carb as compared to ripen. They are easier to digest and are healthy for the body. It provides carbohydrates which is the source of energy in the body and helps to carry out the functions of the body. They are notorious for being too much sugary. But in truth, they do not contain much concentration as compared to other fruits.



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