Grams to Cups: Oat Milk
If your recipe is written in cups but your scale reads grams — or the other way round — this page solves the conversion for oat milk. One cup of oat milk weighs about 240 grams, which works out to a density of 1.01 g/ml. From there, half a cup is roughly 120 g, a quarter cup about 60 g, and one tablespoon about 15 g.
Converting between weight and volume depends on density, and density is specific to each ingredient: a cup of oat milk does not weigh the same as a cup of flour or sugar. That is why this tool uses the measured density of oat milk rather than a one-size-fits-all figure.
Cooking measurement converter — Oat Milk
Result
0.417 cups
Common measures — Oat Milk
| Measure | Grams |
|---|---|
| 1 cup | 240 g |
| ¾ cup | 180 g |
| ½ cup | 120 g |
| ⅓ cup | 80 g |
| ¼ cup | 60 g |
| 1 tbsp | 15 g |
| 1 tsp | 5.0 g |
Data source: USDA FoodData Central / manual
How to measure oat milk accurately
Measure oat milk in a clear liquid measuring cup on a flat surface and read the line at eye level; looking from above is misleading because of surface tension. For solid fats like butter, use the markings on the wrapper or the water-displacement method.
When you need maximum accuracy, weigh the liquid in grams — a scale is more exact than any cup.
Frequently asked questions
How many grams are in a cup of oat milk?
One cup of oat milk weighs about 240 grams. Half a cup is roughly 120 grams and a quarter cup about 60 grams.
How many cups is 100 grams of oat milk?
100 grams of oat milk is about 0.42 cups. Use the calculator above for any other amount.
Where does this value come from?
From the ingredient's measured density (1.01 g/ml), based on established baking references. Bear in mind the real weight can vary slightly with brand and moisture.
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