Kefir on keto - can you eat it and how many carbs
Kefir is fermented, but still has 3.8 g lactose per 100 g, so choose plain portions without sugar.
Net carbs per 100 g
≈ 4 g net carbs / 100 g
Does it fit keto?
Use caution
How to fit it
Can fit keto if the serving is small and lactose is counted in your daily limit.
Mini serving calculator
Change the dairy serving and see net carbs, lactose, fat, protein, and calories right away.
Serving check
This serving can fit keto if it matches your daily plan.
Net carbs
2.0 g
Lactose
1.9 g
Fat
1.3 g
Protein
1.5 g
Calories
27
Keto macros calculator
After choosing a dairy serving, check the whole day in the keto macros calculator.
Why it fits or not
- - Lactose is moderate, so portion size matters.
- - Lower fat leaves less room for lactose and carbs.
- - Fermentation helps, but it does not remove all lactose.
How to fit it into keto
- - Choose full-fat versions when possible.
- - Avoid low-fat products if carbs or starches are higher.
- - Choose plain unsweetened versions and check the label.
When to keep it smaller
- - Do not count dairy as carb-free just because it is unsweetened.
- - Avoid pairing it with sugar, honey, syrup, or sweet granola.
How much can fit
Small, moderate, and larger servings by carbs, lactose, fat, and calories.
| Serving | Carbs | Lactose | Fat | Protein | Kcal |
|---|---|---|---|---|---|
| 50 g | 2.0 g | 1.9 g | 1.3 g | 1.5 g | 27 |
| 100 g | 4.0 g | 3.8 g | 2.5 g | 3.0 g | 53 |
| 200 g | 8.0 g | 7.6 g | 5.0 g | 6.0 g | 106 |
Comparison
- - Usually less keto-friendly than aged cheese because lactose is higher.
- - Better than sweet dairy, especially when the serving is measured.
Net carbs calculator
If you compare labels, calculate net carbs quickly and check lactose in the serving.
Keto dairy section
Go back to the main section to compare cheese, cream, curds, milk, and sweet dairy by net carbs.
Related dairy products
Sour cream
Use caution≈ 3.4 g net carbs / 100 g
Sour cream is fermented, but still has 3.2 g lactose per 100 g, so choose plain portions without sugar.
Ryazhenka
Use caution≈ 4.2 g net carbs / 100 g
Ryazhenka is fermented, but still has 4 g lactose per 100 g, so choose plain portions without sugar.
Plain yogurt
Use caution≈ 4.7 g net carbs / 100 g
Plain yogurt is fermented, but still has 4.4 g lactose per 100 g, so choose plain portions without sugar.
Greek yogurt
Use caution≈ 3.6 g net carbs / 100 g
Greek yogurt is fermented, but still has 3.3 g lactose per 100 g, so choose plain portions without sugar.