Milk kefir is keto only in small portions: it has ~12 g of net carbs per 1 cup, against the keto diet's 5 g-per-serving limit.
Net carbs
12 g
per 1 cup
These are the carbs that count on keto: total carbs minus fiber.
One cup has about 12 g net carbs from milk sugars, so keep portions small on keto.
Nutrition facts for milk kefir
8 g
Fat
9 g
Protein
0 g
Fiber
Why milk kefir is keto only in small portions?
On keto the goal is to stay under ~5 g of net carbs per serving; milk kefir has 12 g per 1 cup (12 g total − 0 g of fiber).
How much milk kefir can I eat on keto?
To stay under 5 g of net carbs, the limit is ~101 g of milk kefir.
Related
In moderation
Yogurt
11 g net
/ 1 cup
Yes
Half and half
0 g net
/ 1 tablespoon
In moderation
Whole milk
12 g net
/ 1 cup
Yes
Feta cheese
1 g net
/ 1 oz (about 1/4 cup crumbled)
Yes
Mozzarella cheese
0 g net
/ 1 oz
Yes
Whipping cream
0 g net
/ 1 tablespoon
See all: Keto cheese
Source: nutritional estimate (USDA-style reference) · Confidence: medium
Reviewed by the Ketorai team · Last updated: July 2, 2026 · How we assign the verdict
For information only. This does not replace advice from a health professional.
Reviewed by the Ketorai team · Last updated: July 2, 2026 · How we assign the verdict
For information only. This does not replace advice from a health professional.
Something off? Let us know.
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