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How much protein is in oats?

1/2 cup (40 g) of oats has 5.4 g of protein and 152 calories: about 3.6 g of protein per 100 calories, which is moderate.

At a glance

  • 5.4 g protein and 152 calories per 1/2 cup (40 g).
  • 3.6 g protein per 100 calories: #343 of 536 foods in our USDA list, #23 of 57 in grains & bread.
  • 4 g fiber and 0 mg sodium per serving.

What is oats like to eat?

Oats are whole grains sold as rolled, steel-cut or instant. They cook into porridge, soak into overnight oats and bake into muffins, and pairing them with milk, yogurt or nut butter turns breakfast into a solid protein start.

How can you eat more oats?

Try this

Make overnight oats with Greek yogurtCook porridge in milk with berriesBlend into a smoothie for bodyBake into egg and oat breakfast muffins

Is oats good on a GLP-1?

Warm, soft oatmeal is easy to eat in a small bowl, and it is simple to make a single portion. Protein density matters more when your appetite is small: see protein on a GLP-1.

How does oats compare?

FoodServingProteinCaloriesProtein per 100 kcal
Oats1/2 cup5.4 g1523.6 g
Quinoa1 cup8.1 g2223.7 g
Chia seeds1 tbsp2 g593.5 g
Milk1 cup8.3 g1236.8 g

Close to oats per calorie: pistachios (3.7 g), pasta (3.7 g), corn (3.5 g).

Compare more foods with the protein finder, or see protein in every food we cover.

What should you look for when you buy it?

Rolled, steel-cut and quick oats differ in cooking time and texture; plain oats let you choose your own add-ins and sweetness.

What's the full nutrition for oats?

NutrientPer 1/2 cup (40 g)Per 100 g% Daily Value
Calories152379
Protein5.4 g13.5 g11%
Fat2.4 g5.9 g
Saturated fat0.4 g1.1 g2%
Carbohydrate27.5 g68.7 g
Fiber4 g10.1 g14%
Sugar0.4 g1 g
Sodium0 mg1 mg0%
Calcium18 mg46 mg1%
Iron1.7 mg4.34 mg9%
Vitamin B120 mcg0 mcg0%
Vitamin D0 mcg0 mcg0%

USDA FoodData Central, Foundation: "Oats, whole grain, rolled, old fashioned". % Daily Value uses the FDA's values for adults (protein 50 g, fiber 28 g, sodium 2,300 mg). "Not listed" means USDA didn't measure it for this food, not that it's zero. Brands differ, so check your label.

General education about food, not medical advice. If you have kidney disease or another condition that affects protein, talk to your doctor or a registered dietitian about your own needs.
Sources (3)
  1. USDA FoodData Central (Foundation): Oats, whole grain, rolled, old fashioned
  2. FDA: How to understand and use the Nutrition Facts label
  3. Mozaffarian et al. Nutritional priorities to support GLP-1 therapy for obesity: a joint advisory (ACLM, ASN, OMA, TOS). Obesity Pillars, 2025

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