What does 100 calories of oats (dry) look like?

100 calories =⅓ cup (dry)26 g · 0.9 oz
Medium calorie density3.79 kcal/g
Each 🥣 = one cup (dry) (~81.0 g). The last icon shows a part of one.
Food volume for 100 kcal

Dry oats look small, but they swell when cooked: 100 calories (about 26 g dry) makes a small bowl of porridge.

Oats (dry): 50 to 500 calories

CaloriesGramsOuncesCups (dry)
50 kcal13 g0.5 oz¼
100 kcal26 g0.9 oz⅓
200 kcal53 g1.9 oz⅔
300 kcal79 g2.8 oz1
500 kcal132 g4.7 oz1⅔

What's in 100 calories of oats (dry)

3.5 gprotein
17.9 gcarbs
1.7 gfat
2.7 gfiber

Protein 14% Carbs 71% Fat 15% of calories

Want more food for the same 100 calories?

These give you at least 2½ times more volume than oats (dry):

Compare with other bread, rice & grains

Food100 kcal isGrams
🥣 Oats (dry)⅓ cup (dry)26 g
🥣 Oatmeal (cooked with water)⅔ cup141 g
🍚 Brown rice (cooked)½ cup89 g
🍚 Couscous (cooked)½ cup89 g
🍚 Quinoa (cooked)½ cup83 g
🍚 White rice (cooked)⅓ cup77 g
🍜 Egg noodles (cooked)½ cup72 g
🍝 Whole wheat pasta (cooked)½ cup67 g
🍝 Pasta (cooked)½ cup (spaghetti)63 g
🌮 Corn tortilla2 tortillas46 g
🍞 English muffin¾ muffin44 g
🥞 Pancakes1¼ 4-inch pancakes44 g
🍞 Whole wheat bread1¼ slices40 g

See all bread, rice & grains →

Questions

How much is 100 calories of oats (dry)?

100 calories of oats (dry) is about 26 g (0.9 oz), or roughly ⅓ cup (dry).

How many calories are in 100 g of oats (dry)?

379 calories per 100 g, according to USDA FoodData Central.

Are oats good for weight loss?

Medium calorie density (3.79 kcal per gram). Fine in sensible portions; easy to overeat if you don't measure. 100 calories also gives you 3.5 g of protein and 2.7 g of fiber.

How many calories are in one cup (dry)?

About 307 calories.

How many cups (dry) is 200 calories?

About ⅔ (53 g).

Free printable

The 100-calorie cheat sheet

One page with 300+ foods and their exact 100-calorie portions. Stick it on the fridge.

Source: USDA FoodData Central, "Cereals, oats, regular and quick, not fortified, dry" (FDC ID 173904). Grams for 100 kcal = 100 ÷ calories per gram. Unit weight: USDA: 1 cup = 81.0 g. Real portions vary by size, variety and preparation. Updated 2026-10-23.