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Banana Calories by Size

Extra Small
72 cal
81g / 6" or less
Small
90 cal
101g / 6-7"
Medium
105 cal
118g / 7-8"
Large
121 cal
136g / 8-9"
Extra Large
135 cal
152g / 9"+
Sliced (1 cup)
134 cal
150g

Health Benefits of Bananas

Heart Health

High potassium content helps regulate blood pressure and supports cardiovascular health.

Digestive Health

3.1g of fiber per banana promotes healthy digestion and helps you feel full longer.

Energy Boost

Natural sugars provide quick, sustained energy - perfect pre or post workout.

Mood Support

Vitamin B6 helps produce serotonin and may help improve mood.

Track Bananas Instantly with Cal AI

Just snap a photo of your banana and Cal AI will automatically log the calories and nutrition.

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Frequently Asked Questions

How many calories are in a banana?

A medium banana (118g) contains 105 calories. Small bananas (81g) have about 72 calories, and large bananas (136g) have about 121 calories. The calorie content depends on the size and ripeness of the banana.

Are bananas good for weight loss?

Yes, bananas can be part of a weight loss diet. They're filling due to their fiber content (3.1g per medium banana), relatively low in calories compared to other snacks, and provide sustained energy from natural sugars. The key is portion control and tracking your overall calorie intake.

How many carbs are in a banana?

A medium banana contains 27g of carbohydrates, including 14g of natural sugars and 3.1g of dietary fiber. The net carbs are approximately 24g. As bananas ripen, they become sweeter as starches convert to sugars.

When is the best time to eat a banana?

Bananas are great any time, but especially effective: before a workout (30-60 mins prior) for quick energy, after a workout to replenish glycogen and potassium, or as a mid-morning/afternoon snack to maintain energy levels.

Are bananas high in sugar?

A medium banana contains about 14g of natural sugars. However, bananas have a low-to-medium glycemic index (42-62, depending on ripeness), meaning they don't cause rapid blood sugar spikes. The fiber content helps slow sugar absorption.