Oat Milk: Grams to Cups
1 cup of oat milk = 240 grams
One US cup of oat milk weighs 240 grams. One 250 ml metric cup — the one used in the UK, Australia, New Zealand and Canada — holds 254 grams. To convert any weight, divide the grams by the figure for your cup.
Oat milk weighs roughly 240 g per cup, close to dairy milk; brands vary with added oil and sugar, and there is no published reference figure. For baking, measure it like milk.
Where the 240 g figure comes from
Neither USDA FoodData Central nor King Arthur Baking publishes a cup weight for oat milk, so 240 g is this site's working estimate. Weigh it when the result matters.
How many cups is X grams of oat milk?
| Grams | US cups | Metric cups | Tablespoons | Ounces |
|---|---|---|---|---|
| 25 g oat milk | ⅛ | ⅛ | 1.67 | 0.88 |
| 50 g oat milk | ¼ | ¼ | 3.33 | 1.76 |
| 75 g oat milk | ⅓ | ⅓ | 5 | 2.65 |
| 100 g oat milk | ⅜ | ⅜ | 6.67 | 3.53 |
| 110 g oat milk | ½ | ⅜ | 7.33 | 3.88 |
| 120 g oat milk | ½ | ½ | 8 | 4.23 |
| 125 g oat milk | ½ | ½ | 8.33 | 4.41 |
| 130 g oat milk | ½ | ½ | 8.67 | 4.59 |
| 140 g oat milk | ⅝ | ½ | 9.33 | 4.94 |
| 150 g oat milk | ⅝ | ⅝ | 10 | 5.29 |
| 170 g oat milk | ¾ | ⅔ | 11.33 | 6.00 |
| 175 g oat milk | ¾ | ⅔ | 11.67 | 6.17 |
| 200 g oat milk | ⅞ | ¾ | 13.33 | 7.05 |
| 225 g oat milk | 0.94 | ⅞ | 15 | 7.94 |
| 240 g oat milk | 1 | 0.95 | 16 | 8.47 |
| 250 g oat milk | 1.04 | 1 | 16.67 | 8.82 |
| 275 g oat milk | 1⅛ | 1⅛ | 18.33 | 9.70 |
| 300 g oat milk | 1¼ | 1⅛ | 20 | 10.58 |
| 350 g oat milk | 1½ | 1⅜ | 23.33 | 12.35 |
| 400 g oat milk | 1⅔ | 1⅝ | 26.67 | 14.11 |
| 450 g oat milk | 1⅞ | 1¾ | 30 | 15.87 |
| 500 g oat milk | 2⅛ | 2 | 33.33 | 17.64 |
How to measure oat milk accurately
The 240 g figure assumes the spooned-and-levelled method: spoon the oat milk into a dry measuring cup and sweep the top flat with a straight edge. Scooping the cup through the bag compacts it and gives a heavier cup.
- 1 US cup of oat milk = 240 g
- 1 metric cup (250 ml) of oat milk = 254 g
- ¾ cup = 180 g
- ½ cup = 120 g
- ⅓ cup = 80 g
- ¼ cup = 60 g
- 1 tablespoon = 15.0 g
Frequently asked questions
How many cups is 100 grams of oat milk?
100 grams of oat milk is about ⅜ US cups, based on 240 g per cup, or ⅜ metric cups.
How many grams in a cup of oat milk?
One US cup of oat milk weighs 240 grams. A 250 ml metric cup holds 254 grams.
How many cups is 250 grams of oat milk?
250 grams of oat milk is about 1.04 US cups, or 1 metric cups.
Does a UK cup of oat milk weigh the same as a US cup?
No. A UK, Australian or Canadian metric cup is 250 ml against the US 236.6 ml, so it holds about 5.7% more — 254 g of oat milk rather than 240 g.
How many tablespoons is 100 grams of oat milk?
100 grams of oat milk is about 6.67 tablespoons.
You may also find this useful: Oat Flour.