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Source of potassium and fiber, quarter banana
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 piece (quarter) of Banana (Quarter) (30 g) has 27 calories. That works out to 89 calories per 100 g. It contains 6.8 g of carbs, 0.3 g of protein, 0.1 g of fat and 0.8 g of fiber. Its 0.1 mg of B6 covers 6% of the Daily Value. Its glycemic index is 51 (medium), so it raises blood sugar at a moderate pace.
Selected: 1 piece (quarter) · 30 g
27
KCAL / 30G
Carbs
6.8g
· 2% DV
Protein
0.3g
· 1% DV
Fat
0.1g
· 0% DV
Fiber
0.8g
· 3% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 93% · Protein 4% · Fat 3%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 27 kcal | |
| Total fat | 0.1 g | 0% |
| Saturated fat | 0.03 g | 0% |
| Trans fat | 0 g | |
| Sodium | 0.3 mg | 0% |
| Total carbohydrate | 6.8 g | 2% |
| Fiber | 0.8 g | 3% |
| Protein | 0.3 g | 1% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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| Serving | Amount | Calories |
|---|---|---|
| 1 piece (quarter) | 30 g | 27 kcal |
| 1 tablespoon (chopped) | 10 g | 9 kcal |
| 1 slice (thin) | 15 g | 13 kcal |
| 1 slice (thick) | 25 g | 22 kcal |
| 1 piece (half) | 60 g | 53 kcal |
| 100 g | 100 g | 89 kcal |
| 1 serving (medium) | 100 g | 89 kcal |
| 1 piece (whole) | 120 g | 107 kcal |
| 1 cup (chopped) | 150 g | 134 kcal |
Calculated from 89 calories per 100 g.
Yes, refrigerate bananas once they are ripe to slow further softening. The peel may turn dark in the fridge, but the fruit inside usually stays usable for longer. Keep unripe bananas at room temperature so they can ripen.
Yes, brown spots on a banana usually mean it is ripe, not spoiled. Eat it if the inside looks and smells normal; discard it if you find mold, leaking liquid, or a fermented or otherwise unpleasant smell.
Put bananas in a paper bag at room temperature to help them ripen faster. Adding an apple can speed the process further. Avoid refrigerating green bananas, since cold slows their ripening.
Yes, bananas freeze well. Peel and slice them first, then store the pieces in an airtight container; they work especially well in smoothies and frozen desserts. Frozen bananas soften after thawing, so they are less suitable for eating whole.
Both are edible, but they differ in texture and taste. Green bananas are firmer and contain more resistant starch, while yellow bananas are softer and sweeter. Choose based on your preference and how you plan to use them.
Yes, banana peel is edible, though it is tougher and more bitter than the fruit. People often cook it or blend it into smoothies; wash the peel thoroughly under running water before using it.
Ripe bananas do not usually cause constipation for most people. Less-ripe bananas contain more resistant starch, which may make stools harder for some; if constipation persists, changing banana ripeness alone may not solve it.
Yes, dogs can eat small pieces of plain banana as an occasional treat. Remove the peel, which is difficult to digest, and avoid giving large amounts because the fruit is sugary and may upset a dog's stomach.
Yes, a banana can be a convenient snack before exercise because it provides carbohydrates that the body can use for energy. A quarter banana is a small portion, so people doing a longer or more demanding workout may want a larger snack.
Yes, many people with diabetes can include bananas in a meal plan, but banana carbohydrates can raise blood glucose. Portion size, ripeness, medication, and individual glucose response matter, so ask your clinician or dietitian what amount suits you.
Vitamins
B6
0.11mg · 6% DV
Vitamin C
2.61mg · 3% DV
B5
0.1mg · 2% DV
B2
0.02mg · 2% DV
Minerals
Manganese
0.08mg · 3% DV
Potassium ⭐
107mg · 3% DV
Copper
0.02mg · 2% DV
Magnesium
8.1mg · 2% DV
Sodium
0.3mg · 0% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 27 calories in 1 piece (quarter) (30 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
A quarter banana is a small portion of the familiar tropical fruit, usually eaten peeled and fresh. Ripe bananas are soft and creamy, with a gentle sweetness; they can also be mashed or blended into other foods. Around the world, people enjoy them at breakfast, as a portable snack, or sliced over cereal, porridge and yoghurt. In many places, bananas are also used in baking and smoothies. They provide carbohydrates along with potassium and fibre. Pair a quarter banana with plain yoghurt or a little nut butter for a more filling snack, or add it to porridge when you want sweetness without relying on refined sugar.
High
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Medium
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
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.
No known major allergens
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
SATURATED
0.03g
MONOUNSATURATED
0.01g
POLYUNSATURATED
0.02g
Omega 6:3 ratio 2:1
Below the ideal 4:1 — a good omega balance.
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Nutrition data compiled from USDA FoodData Central and scientific sources.