Oyster - How Many Calories?

Reviewed by Dyt. Şeyda Ertaş, Registered Dietitian Last updated: January 4, 2026

Oyster

~100 g

Calculated from the 100 g values. ~ indicates an estimated serving weight.

Oyster image
81kcal
Carbohydrate5 g %24
Protein9.5 g %47
Fat2.3 g %26

Oyster Nutrition Values

Nutrients100 gr1 Portion (Medium)
Calories(kcal)8181
Carbohydrate (g)4.954.95
Protein (g)9.459.45
Fat (g)2.32.3
Fiber (g)00
Cholesterol (mg)5050
Sodium (mg)106106
Potassium (mg)168168
Calcium (mg)88
Iron (mg)5.115.11
Vitamin A (IU)270270
Vitamin C (mg)88

Values are calculated from a 100 g basis. The product, recipe and edible serving weight can change the result. See the food-specific notes below for the reference used.

Dietitian's Tips for Consuming Oyster

  • Metabolic Effect: Oyster is a low-calorie and high-protein seafood. Thanks to the zinc it contains, it strengthens the immune system and increases energy levels. It also contains iodine, which is important for thyroid functions.
  • Consumption Recommendation: Consuming oysters raw is the most common method, but it must be ensured that they are hygienic. It can also be consumed cooked, but overcooking can reduce its nutritional value. Consuming it with lemon juice increases its flavor and facilitates digestion.
  • Things to Consider: Since oysters are harvested from the sea, they may contain heavy metals. Therefore, it should be obtained from reliable sources and excessive consumption should be avoided. Pregnant women and those with weakened immune systems should consume cooked oysters.
  • Exercise Equivalent: It is enough to walk at a light pace for about 12 minutes to burn the calories from 100 grams of oysters.