How many calories in
kefir?
Per 100g, kefir delivers 55 calories and 4.3g of protein. Reasonable for daily use; the per-ounce numbers are what matter most.
Common serving sizes.
Calories scale with portion. Here's how a typical kefir serving translates in your tracker:
What 55 calories means.
Balanced — kefir sits in a moderate range and fits weight loss, maintenance, or muscle gain when portioned to your daily target.
Kefir vs. similar foods.
How kefir stacks up on calories and protein against foods people commonly compare it to:
Skip the lookup. Snap the plate.
Point your iPhone camera at kefir and Spotwell's on-device AI estimates the portion and macros in under a second — no manual entry, no barcode hunting.
Download on theApp StoreQuick answers.
How many calories in kefir?
Kefir has approximately 55 calories per 100g. A typical serving — 3 oz (85g) — comes in at 47 calories.
How much protein is in kefir?
4.3g of protein per 100g. That puts kefir at roughly 7.8g of protein per 100 calories — a useful lens when comparing to other dairy sources.
How do I log kefir accurately?
The simplest method: weigh it on a kitchen scale, then enter grams in your tracker. With Spotwell, you can skip the scale — point the camera at the plate and the AI estimates the portion in under a second. Adjust the value if it looks off.
Is kefir good for weight loss?
It depends on your overall calorie target. Kefir is naturally low-calorie at 55 kcal per 100g, so it's easy to fit into a deficit.