Bananas are one of the most popular fruits around the world and are an easy source of carbohydrates, dietary fiber, potassium and other nutrients. Their naturally sweet taste and convenient peel make them a simple snack for people of different ages.
If you are looking for banana nutrition facts, it is useful to consider both the nutrition in a typical medium banana and the values per 100 grams. Nutrition can vary slightly depending on the banana's size and ripeness.
Banana Nutrition Facts
According to the FDA, one medium banana weighing about 126 grams provides approximately 110 calories, 30 grams of carbohydrates, 3 grams of dietary fiber, 19 grams of sugars, 1 gram of protein and 450 mg of potassium.
| Nutrient | Amount in 1 Medium Banana (126 g) |
|---|---|
| Calories | 110 kcal |
| Carbohydrates | 30 g |
| Dietary Fiber | 3 g |
| Total Sugars | 19 g |
| Protein | 1 g |
| Fat | 0 g |
| Potassium | 450 mg |
| Vitamin C | 15% DV |
| Vitamin A | 2% DV |
| Calcium | 0% DV |
| Iron | 2% DV |
Nutrition values can vary depending on banana size, variety and ripeness.
For comparison, USDA FoodData Central data for raw bananas list approximately 89 calories, 22.8 g carbohydrates, 2.6 g fiber, 1.1 g protein and 358 mg potassium per 100 grams.
How Many Calories Are in a Banana?
A medium banana contains about 110 calories according to the FDA's raw-fruit nutrition information.
These calories come primarily from carbohydrates, including naturally occurring sugars and starches. This makes bananas a convenient source of energy, particularly as a snack or addition to breakfast.
The actual calorie content depends on the size of the banana. A smaller banana will provide fewer calories, while a larger banana will contain more.
Banana Carbohydrates and Natural Sugars
A medium banana contains approximately 30 grams of carbohydrates, including about 19 grams of naturally occurring sugars and 3 grams of dietary fiber.
Bananas also contain starch, particularly when they are less ripe. As a banana ripens, some of its starch is converted into sugars, which is why ripe bananas taste sweeter.
This doesn't mean bananas need to be avoided. For most people, whole fruit can be part of a balanced eating pattern. Portion size becomes especially important for people who need to monitor their carbohydrate intake.
Banana Is a Good Source of Dietary Fiber
A medium banana provides approximately 3 grams of dietary fiber.
Dietary fiber is important for normal digestive health and can contribute to feelings of fullness. Regularly including fiber-rich foods such as fruits, vegetables, whole grains, beans and nuts can help support a balanced diet.
Because bananas are convenient and require no preparation, they can be an easy way to add fruit and fiber to everyday meals.
Banana Is Rich in Potassium
One of the nutrients most commonly associated with bananas is potassium.
A medium banana provides approximately 450 mg of potassium according to the FDA's raw-fruit nutrition information.
Potassium is an essential mineral that plays important roles in normal muscle function, nerve signaling and fluid balance.
However, bananas are not the only source of potassium. Other fruits, vegetables, beans, dairy products and other foods can also contribute potassium to the diet.
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Vitamins and Minerals in Bananas
Bananas provide more than carbohydrates and potassium. They also contain vitamin C, vitamin B6, magnesium, manganese and other nutrients that contribute to a balanced diet. USDA FoodData Central is a comprehensive source of food-composition information.
Vitamin B6 in Bananas
Bananas provide vitamin B6, an important nutrient involved in normal protein metabolism and several processes in the body.
Including bananas along with other fruits, vegetables, whole grains, beans and protein-rich foods can help contribute to overall vitamin B6 intake.
Vitamin C
A medium banana provides about 15% of the Daily Value for vitamin C, according to the FDA's raw-fruit nutrition information.
Vitamin C is an essential nutrient that supports normal immune function and also acts as an antioxidant.
Although bananas are not as high in vitamin C as fruits such as oranges or guavas, they can still contribute to daily vitamin C intake.
Magnesium and Manganese
Bananas also provide smaller amounts of minerals such as magnesium and manganese.
Magnesium contributes to normal muscle and nerve function, while manganese is involved in normal metabolism and antioxidant defense systems.
6 Potential Health Benefits of Bananas
1. Provides a Convenient Source of Energy
A medium banana provides approximately 110 calories and 30 grams of carbohydrates.
Because carbohydrates are an important source of energy, bananas can be a convenient snack before physical activity or when you need a quick addition to breakfast.
2. Supports Digestive Health
A medium banana contains around 3 grams of dietary fiber.
Dietary fiber helps support normal digestive function and can contribute to regular bowel movements when consumed as part of a fiber-rich diet.
3. Provides Potassium
Potassium is one of the key nutrients found in bananas. A medium banana provides approximately 450 mg of potassium, or about 13% of the Daily Value.
Potassium is an essential mineral involved in normal muscle function, nerve signaling and fluid balance.
4. May Help You Feel Full
Bananas provide carbohydrates and dietary fiber while being naturally free of added sugar.
Fiber can contribute to feelings of fullness, making a whole banana a practical snack between meals.
For greater staying power, you can pair a banana with protein or healthy fats, such as plain yogurt or a small serving of nuts.
5. Supports a Nutrient-Dense Eating Pattern
A banana provides several nutrients for a relatively modest number of calories. It can be an easy way to add fruit, fiber, potassium and other micronutrients to everyday meals.
Instead of focusing on one “superfood,” it is better to include a variety of fruits and vegetables because different foods provide different combinations of nutrients.
6. Easy to Include in Everyday Meals
One of the biggest advantages of bananas is convenience. They come in their own natural peel, require little preparation and can be eaten almost anywhere.
You can add sliced banana to:
- Oatmeal
- Plain yogurt
- Whole-grain cereal
- Smoothies
- Peanut or nut butter toast
- Fruit bowls
- Homemade overnight oats
Are Bananas Healthy to Eat Every Day?
For most people, bananas can be part of a healthy and balanced diet.
The appropriate amount depends on your overall calorie and carbohydrate needs, dietary pattern and individual health goals. A medium banana provides about 110 calories and 30 grams of carbohydrates, so portion size can be particularly relevant for people who need to monitor carbohydrate intake.
The key is variety. Enjoy bananas alongside other fruits, vegetables, whole grains, protein sources and healthy fats rather than relying on one food for all your nutritional needs.
Bananas and Blood Sugar
Bananas contain natural carbohydrates and sugars, so portion size can be important for people who monitor their blood sugar.
A medium banana contains about 30 grams of carbohydrates and 3 grams of dietary fiber according to the FDA.
Bananas do not need to be completely avoided by most people with diabetes. Instead, consider the serving size, the ripeness of the banana and what you eat alongside it.
Pairing a banana with a source of protein or healthy fat, such as plain yogurt or a small serving of nuts, can make it part of a more balanced snack.
Does Banana Have Too Much Sugar?
A medium banana contains about 19 grams of naturally occurring sugar.
This is naturally occurring sugar within a whole fruit, not added sugar. Bananas also provide fiber, potassium and other nutrients.
As a banana ripens, its starches are converted into sugars, making the fruit softer and sweeter. If you are monitoring carbohydrate intake, choosing a portion that fits your individual eating plan is more important than completely avoiding bananas.
Green Banana vs. Ripe Banana
The ripeness of a banana changes its texture, sweetness and carbohydrate composition.
Green Bananas
Less-ripe bananas contain more starch and tend to be firmer and less sweet.
Ripe Bananas
As bananas ripen, some starch is converted into sugars. This makes ripe bananas softer, sweeter and easier to eat.
Both can be included in a varied diet. Your choice can depend on taste, texture and your individual dietary needs.
Best Ways to Eat Bananas
Bananas are easy to include in everyday meals and snacks:
- Slice banana over oatmeal
- Add banana to plain yogurt
- Blend it into a smoothie
- Add banana to whole-grain toast with nut butter
- Mix sliced banana into a fruit bowl
- Add mashed banana to homemade oatmeal recipes
- Eat a banana as a convenient pre- or post-workout snack
For everyday nutrition, whole bananas are generally a simple choice because they require no added sugar or preparation.
How Many Bananas Should You Eat a Day?
There is no universal number of bananas that everyone needs to eat each day.
For many people, one medium banana can be a reasonable fruit serving, but individual needs vary according to total calorie intake, carbohydrate requirements, activity level and overall dietary pattern.
If you have diabetes, kidney disease or another condition requiring specific dietary restrictions, your ideal fruit portions may be different. A healthcare professional or registered dietitian can help you determine what works best for you.
When Is the Best Time to Eat a Banana?
There is no scientifically established “best time” to eat a banana.
You can enjoy one at breakfast, as a snack, before physical activity or as part of a meal. What matters more is your overall diet and portion size.
For a more balanced snack, combine banana with a protein or healthy-fat source such as plain yogurt, nuts or nut butter.
Final Thoughts
Bananas are a convenient and nutrient-rich fruit that provides carbohydrates, dietary fiber, potassium, vitamin C and vitamin B6.
A medium banana contains approximately 110 calories, 30 grams of carbohydrates, 3 grams of fiber and 450 mg of potassium based on the FDA's raw-fruit nutrition information.
Bananas can fit into a healthy eating pattern for most people. The key is to consider portion size and enjoy them alongside a variety of fruits, vegetables, whole grains, protein foods and healthy fats.
Rather than thinking of bananas as simply a “high-sugar fruit,” it is more useful to look at the whole nutritional profile of the fruit and how it fits into your individual diet.
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Disclaimer
This article is for general educational and informational purposes only. Nutrition values can vary depending on banana size, variety and ripeness. If you have diabetes, kidney disease or another medical condition requiring specific dietary restrictions, consult a qualified healthcare professional or registered dietitian for personalized dietary advice.



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