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Calories in food

Oats & Oatmeal: Calories, Protein, Carbs & Fat

A serving of oats & oatmeal listed as 1/2 cup dry (40 g) has 153 calories, 5.4 g of protein, 27.5 g of carbs and 2.4 g of fat. Per 100 g that is 382 kcal.

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153kcal per 1/2 cup dry (40 g)
382kcal per 100 g
5.4 gprotein per 1/2 cup dry

Oats & Oatmeal serving sizes: calories and macros

ServingGramsCaloriesProtein gCarbs gFat g
100 g10038213.568.76
1 oz28.41083.819.51.7
1/2 cup dry401535.427.52.4

Where the calories in oats & oatmeal come from

Counting protein and carbs at 4 calories per gram and fat at 9, oats & oatmeal gets 14% of its calories from protein, 72% from carbs and 14% from fat. This split is calculated from the macros listed per 100 g (13.5 g protein, 68.7 g carbs, 6 g fat).

Protein 14%Carbs 72%Fat 14%

Sodium, fiber, sugar and saturated fat in oats & oatmeal

A 1/2 cup dry (40 g) of oats & oatmeal also contains 2.4 mg sodium, 4 g fiber, 0.4 g sugar and 0.4 g saturated fat.

NutrientPer 100 gPer 1/2 cup dry (40 g)
Sodium6 mg2.4 mg
Fiber10.1 g4 g
Sugar1 g0.4 g
Saturated fat1.1 g0.4 g
Cholesterol0 mg0 mg
Potassium362 mg144.8 mg
Calcium52 mg20.8 mg
Iron4.2 mg1.7 mg
Vitamin C0 mg0 mg

How oats & oatmeal compares with similar foods

Besly has few foods in the same group, so this compares oats & oatmeal with the closest foods by calories per 100 g. At 382 kcal it is number 4 of 5, sorted from lowest to highest.

Food (per 100 g)CaloriesProtein gCarbs gFat g
Quinoa1204.421.31.9
Honey3040.382.40
Lentils35224.663.41.1
Oats & Oatmeal (this page)38213.568.76
Cheddar Cheese40823.32.434

Forms and preparations of oats & oatmeal

Across the 6 forms listed for oats & oatmeal, calories range from 76 kcal per 100 g (Oatmeal, NFS) to 382 kcal per 100 g (Rolled Oats).

Form or preparation (per 100 g)CaloriesProtein gCarbs gFat gDefault serving
Rolled Oats (main entry)38213.568.761/2 cup dry (40 g): 153 kcal
Oats, raw37913.267.76.51 cup (80 g): 303 kcal
Oats, whole grain, steel cut38112.569.95.81 serving (40 g): 152 kcal
Oats, whole grain, rolled, old fashioned38213.568.761 serving (40 g): 153 kcal
Oatmeal, fast food, plain802.611.92.51 cup, cooked (240 g): 192 kcal
Oatmeal, NFS762.211.22.61 cup, cooked (240 g): 182 kcal

Frequently asked questions

How many calories are in 1/2 cup dry of oats & oatmeal?

1/2 cup dry (40 g) of oats & oatmeal has 153 calories, with 5.4 g protein, 27.5 g carbs and 2.4 g fat.

How many calories are in 100 g of oats & oatmeal?

100 g of oats & oatmeal has 382 calories, 13.5 g protein, 68.7 g carbs and 6 g fat. One ounce (28.4 g) is 108 calories.

Is oats & oatmeal low in carbs?

Carbs supply 72% of the calories in oats & oatmeal (protein 14%, fat 14%). Per 100 g there are 68.7 g of carbs, and 1/2 cup dry (40 g) has 27.5 g, including 4 g of fiber.

Recipes with oats & oatmeal

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Source: USDA FoodData Central, via the Besly food database (source tag “usda”, record us.generic.rolled_oats). Data snapshot: October 16, 2026. Values are averages for the food as described and vary by brand, ripeness and preparation. Serving sizes come from the same record.

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