Oats - How Many Calories?

Reviewed by Dyt. Şeyda Ertaş, Registered Dietitian Last reviewed: May 16, 2026

Oats

40 gr
Oats image
156kcal
Carbohydrate26.52 gr %67
Protein6.76 gr %17
Fat2.76 gr %16

Oats Nutrition Values

Nutrients100 gr1 1 Serving (Raw)
Calories(kcal)389156
Carbohydrate (g)66.326.52
Protein (g)16.96.76
Fat (g)6.92.76
Fiber (g)10.64.24
Cholesterol (mg)00
Sodium (mg)20.8
Potassium (mg)429171.6
Calcium (mg)5421.6
Iron (mg)4.71.88
Vitamin A (IU)00
Vitamin C (mg)00

Nutritional values are based on the USDA database. Natural variations may occur; this information is for informational purposes only and does not constitute medical advice.

Dietitian's Tips for Consuming Oats

  • Metabolic Effect: Oats contain beta-glucan fiber, which slows glucose absorption and prevents sharp spikes in blood sugar, supporting stable insulin response. Regular consumption has also been shown to gradually reduce LDL cholesterol, making it a heart-friendly choice.
  • Consumption Recommendation: A serving of 40–50 grams of cooked oats in the morning provides sustained energy and keeps hunger at bay until lunch. Adding fresh fruit or a pinch of cinnamon enhances both flavor and nutritional value without significantly increasing calories.
  • Caution: Individuals with celiac disease or gluten sensitivity should opt for certified gluten-free oats, as cross-contamination in conventional processing facilities is a real concern. Exceeding recommended portions may destabilize blood sugar in people with insulin resistance due to the relatively high carbohydrate content.
  • Exercise: Eating a bowl of oats 1–2 hours before training delivers slow-releasing carbohydrates that fuel muscles throughout the workout. When combined with a protein source such as yogurt or milk after exercise, oats effectively support glycogen replenishment and muscle recovery.