How much protein is in 100g of kefir?
3.3g of protein, with 41 calories.
How Much Protein Is in Kefir?
Kefir has 3.3g of protein per 100g and 41 calories. Here is what that means per realistic portion, how it compares with similar foods, and how to use it to hit a daily protein target.
Protein in kefir
Kefir contains 3.3g of protein per 100g, alongside 41 calories. That works out to 8g of protein per 100 calories, which is a solid protein density.
A typical portion — 1 cup, about 240g — gives roughly 7.9g of protein and 98 calories.
To reach 30g of protein from kefir alone you would need about 909g — which is why it works better as part of a meal than as the protein source
Kefir compared with similar foods
Same category, ranked by protein per 100g.
| Food | Protein | Calories |
|---|---|---|
| 🧀 Parmesan | 35g | 420 |
| 🧀 Pecorino romano | 32g | 387 |
| 🧀 Gruyère | 30g | 413 |
| 🧀 Emmental (Swiss) | 29g | 380 |
| 🧀 Comté | 26g | 400 |
| 🧀 Manchego | 26g | 320 |
| 🧀 Asiago | 26g | 392 |
| 🥛 Kefir | 3.3g | 41 |
Per 100g.
Using kefir to hit a protein target
- Protein per 100g: 3.3g. Calories per 100g: 41. Quality: complete protein.
- Fermented milk drink — probiotic-rich.
- Pair kefir with a denser protein source so the meal still clears 30g.
- Log it in the Protein Calendar and the daily total updates automatically.
Add up your whole meal
Type what you ate in plain words and Protein Hunter returns protein and calories for the full plate.
Try the Protein CalculatorCommon questions
How much kefir do I need for 30g of protein?
About 909g of kefir provides 30g of protein.
Is kefir a good protein source?
Not really. At 3.3g per 100g it is better thought of as a supporting food than a protein source.
Keep reading
Protein in parmesan35g per 100g, 420 calories.Protein CalculatorAdd this food to a full meal and get the total.What is Protein Hunter?
Protein Hunter is a protein and nutrition app with a database of 232 foods — from a leaf of kale to a wagyu steak — plus AI tools that answer protein questions, count a whole meal, build recipes to a macro target, and track what you actually eat.
- Search any food
- Count a full meal
- Recipes to your macros
- Scan a plate or label
Why it's different: the numbers are calculated from a fixed ingredient database rather than guessed, and when a target is not physically achievable the app says so instead of inventing a figure.
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