Half a banana is an unprocessed fruit portion that provides naturally occurring carbohydrates and fiber. Per 100 g, it contains 89 calories, 22.8 g of carbohydrates, 1.1 g of protein, and just 0.3 g of fat.

With 2.6 g of fiber per 100 g and a glycemic index of 51, banana can fit into many eating patterns. It is suitable for vegan, vegetarian, gluten-free, Mediterranean, and flexitarian diets, and works well as a snack or in yogurt, oats, and smoothies.

Half banana Nutrition Facts

Selected: 100 g

KCAL / 100G

Carbs

22.8g

· 93%

Protein

1.1g

· 4%

Fat

0.3g

· 3%

Fiber

2.6g

Half banana Vitamins & Minerals

Vitamins

0.37mg · 22% DV

Vitamin C

8.7mg · 10% DV

0.33mg · 7% DV

0.07mg · 5% DV

Minerals

Potassium ⭐

358mg · 11% DV

Magnesium

27mg · 6% DV

Phosphorus

22mg · 3% DV

Selenium

1µg · 2% DV

Half banana Glycemic Index

GLYCEMIC INDEX

Medium

0 Low5570100

GLYCEMIC LOAD

Medium

Accounts for portion size — a more realistic measure than GI alone.

Is Half banana Processed?

NOVA 1

Unprocessed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Half banana Contain Allergens?

No known major allergens

Gluten free

Dairy free

Eggs free

Peanuts free

Tree nuts free

Fish free

Soy free

Sesame free

Which Diets Is Half banana Good For?

Vegan

✓ Suitable

Vegetarian

✓ Suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

— Not suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

— Not suitable

Low FODMAP

— Not suitable

Half banana Fat Profile

SATURATED

0.11g

MONOUNSATURATED

0.03g

POLYUNSATURATED

0.07g

⚖️

Omega 6:3 ratio 1.7:1

Below the ideal 4:1 — a good omega balance.

Foods Similar to Half banana

🍓

Strawberry

32 kcal

🥑

Avocado

160 kcal

🍑

Peach

39 kcal

🍇

Dried Raisins

299 kcal

🍎

Apple

52 kcal

🍇

Grapes

69 kcal

🍉

Watermelon

30 kcal

🍍

Pineapple

50 kcal

Half banana — Frequently Asked Questions

When is half a banana at its best to eat?

A yellow banana with a few brown speckles is usually a good balance of sweetness and firmness. Greener bananas are firmer and less sweet, while very ripe ones work especially well in smoothies, porridge, or baking.

How can I stop a cut half banana from turning brown?

A light coating of lemon juice on the cut surface can slow browning. Wrap it tightly or place it in an airtight container in the refrigerator to limit contact with air.

How long does half a banana keep in the fridge?

A cut banana is best eaten the same day when tightly wrapped or stored in an airtight container. It may darken and soften over time; discard it if it develops mold, an off smell, or excessive moisture.

Can I freeze half a banana?

Yes. Slice it and freeze the pieces in a single layer before transferring them to a sealed freezer bag. Once thawed it will be soft, so it is best used in smoothies, banana bread, or blended desserts.

Is half a banana a good pre-workout snack?

Its easily digested carbohydrate makes it a convenient option when you want a small snack before exercise. For a longer or tougher session, pairing it with yogurt, kefir, or a little nut butter can make the snack more sustaining.

Does eating half a banana at night cause weight gain?

Eating a banana at night does not by itself cause weight gain; overall eating habits and portions matter more. If you need a bedtime snack, combining it with a protein food such as yogurt or milk may help it feel more satisfying.

Can bananas cause constipation?

It can depend on ripeness and individual tolerance. Less-ripe bananas may be more binding for some people, whereas ripe banana alongside adequate fluids may fit comfortably into a fiber-containing diet.

What goes well with half a banana?

Yogurt or kefir adds protein, while oats and cinnamon turn it into a more filling breakfast or snack. Walnuts, almonds, or unsweetened peanut butter can add richness and help make the snack more balanced.

Is a banana or an apple better for a snack?

Banana is often the more convenient choice when you want a soft, quick snack, especially around exercise. An apple offers a crisp texture and takes longer to eat; either can be more satisfying when paired with yogurt or nuts.

Who should be cautious with bananas?

People who have been advised to limit potassium because of kidney disease should ask their clinician or dietitian about appropriate portions. Some people with latex allergy can also react to banana, so mouth itching or swelling after eating it should be taken seriously.

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Nutrition data compiled from USDA FoodData Central and scientific sources.