Calories in Banana
A banana is one of the most popular fruits worldwide, known for its convenience and natural sweetness. A medium banana provides 105 calories and is an excellent source of potassium, vitamin B6, and dietary fiber. Bananas are a go-to pre- or post-workout snack due to their fast-digesting carbohydrates.
Common Variations
| Variation | Serving | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 100 g | 100 g | 89 | 1.1g | 22.8g | 0.3g |
| 1 small (6" to 6-7/8" long) (101g) | 1 small (6" to 6-7/8" long) (101g) | 90 | 1.1g | 23.1g | 0.3g |
| 1 large (8" to 8-7/8" long) (136g) | 1 large (8" to 8-7/8" long) (136g) | 121 | 1.5g | 31.1g | 0.5g |
| 1 oz (28g) | 1 oz (28g) | 25 | 0.3g | 6.5g | 0.1g |
| 1 extra small (less than 6" long) (81g) | 1 extra small (less than 6" long) (81g) | 72 | 0.9g | 18.5g | 0.3g |
| 1 extra large (9" or longer) (152g) | 1 extra large (9" or longer) (152g) | 135 | 1.7g | 34.7g | 0.5g |
Health Benefits
Rich in potassium, which supports heart health and helps regulate blood pressure.
Contains vitamin B6, essential for brain development and immune function.
High in dietary fiber, promoting healthy digestion and sustained energy levels.
Nutrition Tips
- Green bananas have more resistant starch and fewer sugars, making them slightly better for blood sugar management.
- Bananas are one of the best natural sources of potassium — one medium banana provides about 12% of your daily value.
- Pair a banana with a protein source like Greek yogurt or peanut butter to slow sugar absorption and stay full longer.
- Frozen bananas make an excellent base for smoothies and naturally creamy 'nice cream' without added sugar.
- The calorie difference between a small and large banana can be nearly 50 calories — use GAYA to photograph your actual portion for accuracy.
GAYA Tracking Tip
When logging a banana with GAYA, photograph it next to your plate for scale reference. GAYA can estimate the size (small vs. large) from the photo, which matters — a large banana has nearly 50% more calories than a small one.
Frequently Asked Questions
How many calories are in a banana?+
A medium banana (118g) contains approximately 105 calories. Small bananas have around 72 calories, and large bananas around 121 calories. The calorie content comes primarily from carbohydrates, with 27g of carbs per medium banana.
Are bananas good for weight loss?+
Bananas can be part of a weight loss diet. While they're higher in sugar than some fruits, their fiber content (3.1g per medium banana) promotes satiety. The key is portion awareness — track your actual serving size rather than guessing.
When is the best time to eat a banana?+
Bananas are ideal as a pre-workout snack (30-60 minutes before exercise) due to their fast-digesting carbs, or as a post-workout recovery food paired with protein. They also make a good mid-afternoon snack to prevent energy dips.
Related Foods
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