How Many Calories in a Banana
Medium banana = 105 calories with great nutrition
⚡Quick Answer
A medium banana (7-8 inches) has about 105 calories, 27g carbs, 3g fiber, and 422mg potassium (12% daily value). Small bananas have ~90 calories, large ones ~121 calories. Bananas are excellent for energy, muscle function, and heart health.
Step-by-Step Guide
Quick Answer
A medium banana (7-8 inches, ~118g) contains approximately 105 calories. Small bananas have ~90 calories, large ones ~121 calories, and extra-large ~135 calories.
Banana Nutrition Facts
Per medium banana: Calories: 105 | Carbs: 27g | Fiber: 3g | Sugar: 14g | Protein: 1.3g | Fat: 0.4g | Potassium: 422mg (12% DV) | Vitamin B6: 25% DV | Vitamin C: 11% DV
Calories by Banana Size
Extra small (< 6 inches): ~72 calories | Small (6-7 inches): ~90 calories | Medium (7-8 inches): ~105 calories | Large (8-9 inches): ~121 calories | Extra large (> 9 inches): ~135 calories
Ripeness and Calories
Calorie count stays roughly the same as bananas ripen. However, starch converts to sugar — green bananas have more resistant starch (good for digestion), while ripe bananas have more simple sugars (higher glycemic index).
Frequently Asked Questions
Are bananas good for weight loss?
Yes — bananas are filling due to fiber and resistant starch, relatively low-calorie for their size, and provide natural energy. The key is portion control. One banana as a snack is a healthy choice; eating several adds up quickly.
Are bananas high in sugar?
A medium banana has 14g of natural sugar — moderate compared to many snacks. The fiber slows sugar absorption, preventing blood sugar spikes. For context, a can of soda has 39g of added sugar with no nutritional benefits.
When is the best time to eat a banana?
Before workouts for energy, after workouts for potassium and recovery, or as a filling snack between meals. Avoid eating very ripe bananas alone if you're managing blood sugar — pair with protein or fat.
Do frozen bananas have more calories?
No — freezing doesn't change the calorie content. Frozen bananas are great for smoothies or as an ice cream alternative. Just don't add sugar or other caloric ingredients.
How do bananas compare to other fruits?
Bananas are moderate in calories. Apple (medium): 95 cal | Orange (medium): 62 cal | Grapes (1 cup): 104 cal | Mango (1 cup): 99 cal. Bananas offer more potassium and B6 than most fruits.