Per 100g, kefir delivers 55 calories and 4.3g of protein. Reasonable for daily use; the per-ounce numbers are what matter most.
Calories scale with portion. Here's how a typical kefir serving translates in your tracker:
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 StoreKefir has approximately 55 calories per 100g. A typical serving — 3 oz (85g) — comes in at 47 calories.
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.
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.
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.