How Many Calories Are In Oat Milk? (With Calculator)

These days there are many dairy milk alternatives to choose from, but are they any better than cow’s milk when it comes to calorie content and nutrition?

In this article, we’re focusing on the calorie content of oat milk, which is one of the higher-calorie dairy milk alternatives you can choose.

Oat milk calories vary depending on the brand and ingredients but using an average, a cup of light oat milk (weighing 240ml/8oz) contains 100 calories (in kcal) and the same serving of original oat milk contains 120 calories.

There are also extra creamy and barista options to consider, so read on to find specific oat milk calories for your type and brand, or use our calculator to work out the calories of any serving.

Oat Milk Calories Per Serving

The table below shows the average calorie values for various servings of unsweetened, original, extra creamy, and barista oat milk.

Please note that oat milk calorie values can vary depending on the brand, see below for brand-specific calorie values.

Oat Milk TypeAverage calories
per 100ml
Average calories
per 240ml/8oz cup
Light (or no sugar oat milk)42kcal100kcal
Original oat milk50kcal120kcal
Extra creamy oat milk54kcal130kcal
Barista-style oat milk63kcal150kcal
Oat milk weight conversion chart

Oat Milk Serving Weight

The USDA recommended serving of oat milk is one cup which weighs eight ounces or 244g per serving, but most oat milk nutritional labels are in milliliters which confirms that one cup serving is equal to 240ml.

A 240ml serving of original oat milk contains an average of 120 calories (in kcal) and a serving of light oat milk contains an average of 100 calories per serving.

Oat Milk Calorie Calculator

The calculator below will help you to calculate the calories of any serving weight of oat milk (light, original, extra-creamy, or barista).

Select your milk type, and weight preference and input the weight to get started (use a decimal weight for ounce and cup weights, for example, 6.5):

Please note that the values in this calculator are based on averages and calories might vary slightly depending on the brand. See below for more information on brand-specific calorie values.

Oat Milk Calories Vs Dairy

There are many reasons why people switch from cow’s milk to a plant-based alternative milk, but if it’s to save calories, there’s not much of a saving swapping dairy for oat milk.

The average lighter oat option contains 100kcal which is more than skim cow’s milk, regular oat milk contains the same calories as 2% fat cow’s milk and whole cow’s milk contains just 16 more calories than creamy oat milk.

  • Light oat milk 100kcal per cup – skim cow’s milk 82kcal per cup
  • Regular oat milk 120kcal per cup – 2% fat cow’s milk 120kcal per cup
  • Extra creamy oat milk – 130kcal per cup – whole cow’s milk 146kcal per cup

There is some creamier barista-style oat milk that contains 180 calories per cup, which is more than full-fat cow’s milk.

Oat Milk Calorie Chart

The quick reference chart below will help you to convert various weights of oat milk, along with the calories per serving for light and regular (original) oat milk.

This data is based on average figures and using the assumption that light oat milk contains 42kcal per 100g (0.42kcal per ml) and Regular (sweetened) oat milk contains 50kcal per 100ml (0.5kcal per gram).

Serving weightLight/no sugar Oat Milk
Calories Per Serving
Regular/Sweetened Oat Milk
Calories Per Serving
100ml42kcal50kcal
150ml63kcal75kcal
200ml84kcal100kcal
250ml105kcal125kcal
300ml126kcal150kcal
350ml143kcal175kcal
400ml168kcal200kcal
450ml189kcal225kcal
500ml210kcal250kcal
1 fl oz13kcal15kcal
2 fl oz25kcal30kcal
3 fl oz38kcal45kcal
4 fl oz50kcal60kcal
5 fl oz63kcal75kcal
6 fl oz75kcal90kcal
7 fl oz88kcal105kcal
8 fl oz100kcal120kcal
9 fl oz113kcal135kcal
10 fl oz125kcal150kcal
Table to show the calories for various servings of oat milk

Oat Milk Calories By Brand And Type

Each brand and type of oat milk has a different recipe and therefore a different calorie value per serving, depending on added ingredients such as sugar.

The table below shows a calorie comparison between some of the most popular brands and types of oat milk.

Oat Milk Brand & TypeServing WeightCalories Per Serving
Oatly Original Oat MilkOne cup / 240ml120kcal
Oatly Full Fat Oat MilkOne cup / 240ml160kcal
Oatly Barista Sugar-Free
Oat Milk
One cup / 240ml140kcal
Oatly Original Chocolate
Oat Milk
One cup / 240ml150kcal
Califia Farms Extra Creamy
Oat Milk
One cup / 240ml110kcal
Califia Farms Zero Sugar
Oat Milk
One cup / 240ml100kcal
Califia Farms Barista
Oat Milk
One cup / 240ml130kcal
Oatsome Organic Oat MilkOne cup / 240ml130kcal
Oatsome Organic Barista
Oat Milk
One cup / 240ml180kcal
Dream Original Oat MilkOne cup / 240ml120kcal
Dream Unsweetened Oat MilkOne cup / 240ml70kcal
Pacific Foods Organic Original
Oat Milk
One cup / 240ml130kcal
Pacific Foods Organic Vanilla
Oat Milk
One cup / 240ml130kcal
Pacific Foods Organic Barista
Oat Milk
One cup / 240ml180kcal
Great Value Extra Creamy
Oat Milk
One cup / 240ml120kcal
Great Value Original
Oat Milk
One cup / 240ml100kcal

More Oat Milk Calorie FAQs

How many calories are in 100ml of oat milk?

Oat milk calories can vary between brands, but the average calorie value for 100ml of unsweetened oat milk is 42kcal and 50kcal for 100ml of sweetened oat milk.

What’s the calorie difference between sweet and unsweetened oat milk?

An average cup of sweetened oat milk contains about 100kcal (depending on the brand) and a cup of unsweetened oat milk contains 120kcal, so the difference between the two is 20kcal. Barista-style oat milk is typically higher in calories at 150kcal per cup.

Related Articles

This article is part of a series of helpful articles on milk weights, servings, calories, and comparisons – you might also find the following articles useful:

Lowest calorie milk (with milk alternatives & calculator)

References Used for this Article

To ensure the nutritional information used in this article is accurate, I have used data from USDA FoodData Central; the links below contain the source information:

Unsweetened oat milk nutritional information

Sweetened oat milk nutritional information