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Loose, pale beige oat flakes with flattened oval shapes, softly curled edges, and a dry, lightly textured surface.
⚡High Potassium
💪High Protein
🌿High Fiber

Oat Calories

High in fiber and protein, low glycemic index grain

In season: Spring · Summer · Autumn · Winter

CALORIES · 100 G

389kcal

GI

55medium

POTASSIUM · 100 G

429mg

FIBER · 100 G

10.6g

Quick answer

1 cup (medium) of Oat (80 g) has 311 calories. That works out to 389 calories per 100 g. It contains 53 g of carbs, 13.5 g of protein, 5.5 g of fat and 8.5 g of fiber. Its 3.9 mg of Manganese covers 170% of the Daily Value. Its glycemic index is 55 (medium), so it raises blood sugar at a moderate pace.

Oat Nutrition Facts

Selected: 1 cup (medium) · 80 g

311

KCAL / 80G

Carbs

53g

· 19% DV

Protein

13.5g

· 27% DV

Fat

5.5g

· 7% DV

Fiber

8.5g

· 30% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 67% · Protein 17% · Fat 16%

Oat nutrition facts table · 1 cup (medium) (80 g)

NutrientAmount% DV
Calories311 kcal
Total fat5.5 g7%
Saturated fat0.98 g5%
Trans fat0 g
Sodium1.6 mg0%
Total carbohydrate53 g19%
Fiber8.5 g30%
Protein13.5 g27%

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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How Many Calories in 1 Cup of Oat?

ServingAmountCalories
1 cup (medium)80 g311 kcal
1 tablespoon (extra small)6 g23 kcal
2 tablespoon (small)12 g47 kcal
1 piece (small)30 g117 kcal
1 pack (mini)35 g136 kcal
½ cup (small)40 g156 kcal
1 serving (medium)50 g195 kcal
100 g100 g389 kcal
1 serving (large)100 g389 kcal

Calculated from 389 calories per 100 g.

Frequently Asked Questions About Oat

How do you cook oats?

Simmer oats with water or milk, stirring occasionally, until they reach the texture you like. Add fruit, nuts, or spices after cooking. Rolled oats cook faster, while steel-cut oats usually need more time and liquid.

What is the difference between rolled oats and steel-cut oats?

Rolled oats are steamed and flattened, so they cook quickly and become soft. Steel-cut oats are chopped oat groats; they take longer to cook and have a chewier texture. Both work well in porridge, but not always interchangeably in recipes.

Can you eat oats raw?

Yes, oats can be eaten without cooking when mixed into foods such as yogurt or soaked in milk. Soaking softens them and makes them easier to eat. Dry oats on their own can feel tough and absorb liquid as you swallow.

How do you make overnight oats?

Combine oats with milk, yogurt, or a plant-based drink in a covered container and refrigerate overnight. The oats soften without cooking. Add fresh fruit or crunchy toppings just before eating so they keep their texture.

Do oats help lower cholesterol?

Yes, the beta-glucan soluble fiber in oats can help lower LDL cholesterol when oats are eaten regularly as part of a balanced diet. Oats are not a substitute for prescribed cholesterol treatment or other medical advice.

Can oats cause bloating?

Yes, oats can cause bloating in some people, especially if they increase their fiber intake suddenly or eat a large serving. Try a smaller amount, drink enough fluids, and increase fiber gradually to see whether symptoms improve.

How long do oats last, and how should you store them?

Keep oats in a tightly sealed container in a cool, dry place away from sunlight and strong odors. Dry oats can keep for a long time when stored properly, but discard them if they become damp, moldy, or smell rancid.

Are oatmeal and porridge the same thing?

Oatmeal usually means oats cooked into a soft dish, while porridge is a broader term for grains or other ingredients cooked in liquid. In everyday use, people often call oat porridge simply oatmeal.

Can you make oat milk from oats?

Yes, blend oats with cold water and strain the mixture to make oat milk at home. Avoid blending for too long, which can make it slimy. Homemade oat milk separates, so shake it before serving and keep it refrigerated.

Are oats good for weight loss?

Oats can fit into a weight-loss eating plan because their fiber may help you feel full. They do not cause weight loss on their own, and toppings such as syrup, sugar, or large amounts of nut butter can add substantial energy.

Oat Vitamins & Minerals

Vitamins

Biotin

16µg · 53% DV

B1

0.61mg · 51% DV

B5

1.08mg · 22% DV

Folate

44.8µg · 11% DV

Minerals

Manganese

3.92mg · 170% DV

Phosphorus

418mg · 60% DV

Copper

0.4mg · 44% DV

Selenium

22µg · 40% DV

Potassium ⭐

343mg · 10% DV

Sodium

1.6mg · 0% DV

Oat Glycemic Index

GLYCEMIC INDEX

55
Medium
0 Low5570100

GLYCEMIC LOAD

28.8
High

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

How to Burn Off Oat

To burn the 311 calories in 1 cup (medium) (80 g):

🚶

77min

Walking (5 km/h)

🏃

32min

Running (8 km/h)

🚴

42min

Cycling

🏊

36min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

What is Oat?

Oat refers to the edible grain of the oat plant, commonly sold rolled, steel-cut or ground into flour. Across the English-speaking world, it is a familiar breakfast ingredient: cook it into porridge, soak it overnight with milk or yogurt, or stir it into baking and homemade granola. Toppings such as fruit, nuts and seeds add variety, while savoury versions work well too.

Oats offer a substantial amount of fibre and protein; 100 g provides 10.6 g of fibre. For a less sweet bowl, use plain oats and add fresh fruit or yogurt rather than relying on added sugar.

How Nutritious Is Oat?

Nutrient density

High

70/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

56/ 100

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.

Is Oat Processed?

NOVA 2

Minimally Processed

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 Oat 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 Oat Good For?

Vegan

✓ Suitable

Vegetarian

✓ Suitable

Gluten-Free

— Not suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

✓ Suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

— Not suitable

Low FODMAP

— Not suitable

Oat Fat Profile

SATURATED

0.98g

MONOUNSATURATED

1.74g

POLYUNSATURATED

2.03g

⚖️

Omega 6:3 ratio 21.6:1

Above the ideal 4:1 (21.6:1).

Compare Oat

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🥯

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Nutrition data compiled from USDA FoodData Central and scientific sources.