Calories in Kefir (plain)

100kcal per 1 cup (243 g)

41 kcal per 100 g · about 5% of a 2,000-kcal day

Kefir is a drinkable, cultured cousin of yogurt at about 100 calories a cup. Its tang and probiotics come without much of a calorie cost.

Kefir (plain) nutrition facts

NutrientPer 100 gPer 1 cup
Calories41 kcal100 kcal
Protein3.3 g8 g
Carbs4.8 g11.7 g
Fat1 g2.4 g
Fiber0 g0 g
Sugar4.8 g11.7 g

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Values based on USDA FoodData Central reference entries. Actual nutrition varies with variety, preparation, and portion. © 2026 NibbleCal.