Kefir vs Greek yogurt
Side-by-side nutrition breakdown per serving.
Nutrition Comparison
Compared using standard USDA serving sizes. Protein Density Score normalizes per 100 calories for a fair efficiency comparison.
| Metric | Kefir | Greek yogurt | 🏆 Winner |
|---|---|---|---|
| Protein (per serving) | 9.1g | 17g | 🥛 Greek yogurt |
| Calories (per serving) | 103.2 | 100.3 | 🥛 Greek yogurt |
| Fiber (per serving) | 0g | 0g | — |
| Fat (per serving) | 2.4g | 0.7g | 🥛 Greek yogurt |
| Protein Density Score? | 8.8 | 16.9 | 🥛 Greek yogurt |
| Serving Size | 1 cup low-fat kefir (240 g) | ¾ cup Greek yogurt nonfat (170 g) | — |
| Calories for 30g Protein | 340 | 177 | 🥛 Greek yogurt |
How much for 30g protein?
Which Should You Choose?
🥛Choose Kefir if you want:
Kefir contains 30+ probiotic strains vs Greek yogurt's 2-6 strains.
Kefir is 99% lactose-free due to fermentation, easier to digest.
Kefir's liquid form makes it perfect for smoothies or drinking straight.
🥛Choose Greek yogurt if you want:
Greek yogurt has significantly more protein per serving (17.3g vs 8.7g).
Greek yogurt's thick texture works better as a sour cream substitute or in parfaits.
Frequently Asked Questions
Yes. Kefir generally contains more diverse bacteria and yeasts (30+ strains), making it a stronger probiotic drink compared to yogurt's 2-6 strains.
They can substitute in smoothies or dressings, but kefir's thin texture makes it less suitable for spoon-served dishes like parfaits.
Yes, but fermentation lowers lactose significantly. Some people who can't tolerate yogurt find kefir easier to digest.
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