Calories in Kefir
43 calories per 100g (100g)
Lifeway Lowfat Plain Kefir contains 43 calories per 100g, making it a light, nutrient-dense dairy option. A typical 1-cup serving (243g) delivers around 104 calories along with nearly 9g of protein. Its low calorie density makes it easy to fit into a calorie-conscious eating plan.
Calories by Portion Size
| Portion | Weight | Calories |
|---|---|---|
| 1 tbsp (15g) | 15g | 6 |
| 1 oz (28g) | 28g | 12 |
| ¼ cup (61g) | 61g | 26 |
| ½ cup (122g) | 122g | 52 |
| ¾ cup (183g) | 183g | 79 |
| 1 cup (243g) | 243g | 104 |
| 1 bottle / 2 cups (486g) | 486g | 209 |
Protein
3.79g
35% of calories
Carbs
4.77g
44% of calories
Fat
1.02g
21% of calories
How does this compare?
Lifeway Lowfat Plain Kefir at 43 calories per 100g is lower in calories than whole milk (61 cal/100g) and comparable to lowfat plain yogurt (~56 cal/100g), making it one of the lighter cultured dairy choices in the Dairy and Egg Products category. Its higher protein-to-calorie ratio also gives it an edge over regular lowfat milk for satiety.
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- 1.
Use it as a 1:1 substitute for buttermilk or sour cream in recipes to cut calories while keeping a creamy texture.
- 2.
Stick to a 1-cup (243g) portion as a standalone drink or smoothie base — it keeps you under 110 calories while delivering ~9g of protein.
- 3.
Pair it with high-fiber toppings like berries or flaxseed to slow digestion and extend fullness without adding many calories.
- 4.
Choose plain over flavored Lifeway Kefir varieties — flavored versions can contain significantly more sugar and 30–50% more calories per serving.
- 5.
Measure portions if you're tracking calories — pouring straight from a large bottle makes it easy to accidentally double a serving.
Common Questions About Calories in Kefir
How many calories are in a cup of Lifeway Lowfat Plain Kefir?
One cup (243g) of Lifeway Lowfat Plain Kefir contains approximately 104 calories, along with about 9.2g of protein, 11.6g of carbs, and 2.5g of fat.
Is Lifeway Lowfat Plain Kefir good for weight loss?
At just 43 calories per 100g with a solid protein content of 3.79g per 100g, it's a high-protein, low-calorie food that can support satiety — but no single food causes or prevents weight loss on its own.
How does Lifeway Lowfat Kefir compare to regular milk in calories?
Lifeway Lowfat Plain Kefir has 43 calories per 100g, while whole milk has around 61 and 2% reduced-fat milk has about 50, making it one of the lower-calorie dairy drink options available.
How many calories are in a half cup of Lifeway Lowfat Plain Kefir?
A half-cup serving (122g) of Lifeway Lowfat Plain Kefir contains approximately 52 calories.