How many calories in
buttermilk?
Buttermilk is around 40 calories per 100g, with 3.3g of protein, 4.8g of carbs, and 0.9g of fat. Lower-fat option in the dairy category.
Common serving sizes.
Calories scale with portion. Here's how a typical buttermilk serving translates in your tracker:
What 40 calories means.
Very low calorie — at 40 kcal per 100g, buttermilk adds volume to a meal without meaningfully denting a calorie deficit.
Skip the lookup. Snap the plate.
Point your iPhone camera at buttermilk and Spotwell's AI estimates the portion and macros in a few seconds. Check it, adjust anything that looks off, and log it.
Download on theApp StoreQuick answers.
How many calories in buttermilk?
Buttermilk has approximately 40 calories per 100g. A typical serving — 3 oz (85g) — comes in at 34 calories.
How much protein is in buttermilk?
3.3g of protein per 100g. That puts buttermilk at roughly 8.2g of protein per 100 calories — a useful lens when comparing to other dairy sources.
How do I log buttermilk 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 a few seconds. Adjust the value if it looks off.
Is buttermilk good for weight loss?
It depends on your overall calorie target. Buttermilk is naturally low-calorie at 40 kcal per 100g, so it's easy to fit into a deficit.