Calorie data · Dairy← All foods

How many calories in
oat milk?

Oat Milk is around 45 calories per 100g, with 1g of protein, 6.7g of carbs, and 1.5g of fat. Lower-fat option in the dairy category.

45
kcal · 100g
1g
Protein
6.7g
Carbs
1.5g
Fat
Servings

Common serving sizes.

Calories scale with portion. Here's how a typical oat milk serving translates in your tracker:

Serving
Calories
Protein
3 oz (85g)
38 kcal
0.8g
4 oz (113g)
51 kcal
1.1g
1 cup (~150g)
68 kcal
1.5g
In your day

What 45 calories means.

Very low calorie — at 45 kcal per 100g, oat milk adds volume to a meal without meaningfully denting a calorie deficit.

Share of a 2,000-kcal day
2%
per 100g · 2.2g protein per 100 kcal
Time to burn it off
🚶 Walking9 min
🏃 Running4 min
🚴 Cycling5 min
Estimated for a 70 kg / 154 lb adult
Comparison

Oat Milk vs. similar foods.

How oat milk stacks up on calories and protein against foods people commonly compare it to:

Food
Calories
Protein / 100 kcal
Oat Milk
45 kcal / 100g
2.2g
47 kcal / 100g
0.6g
42 kcal / 100g
8.1g
50 kcal / 100g
6.6g
Track this food

Skip the lookup. Snap the plate.

Point your iPhone camera at oat milk 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 Store
FAQ

Quick answers.

How many calories in oat milk?

Oat Milk has approximately 45 calories per 100g. A typical serving — 3 oz (85g) — comes in at 38 calories.

How much protein is in oat milk?

1g of protein per 100g. That puts oat milk at roughly 2.2g of protein per 100 calories — a useful lens when comparing to other dairy sources.

How do I log oat milk 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 oat milk good for weight loss?

It depends on your overall calorie target. Oat Milk is naturally low-calorie at 45 kcal per 100g, so it's easy to fit into a deficit.