Rolled oats (old-fashioned): Cups to Grams
1 cup of rolled oats (old-fashioned) weighs 90 grams (3.17 oz), measured spooned and leveled. The full chart below covers every common cup measure, and the converter handles any other amount.
Quick answer: 1 cup = 90 g · 1/2 cup = 45 g · 1 tablespoon = 5.6 g · 1 teaspoon = 1.9 g
Rolled oats (old-fashioned) conversion chart
| US cups | Grams | Ounces |
|---|---|---|
| 1/4 cup | 22 g | 0.79 oz |
| 1/3 cup | 30 g | 1.06 oz |
| 1/2 cup | 45 g | 1.59 oz |
| 2/3 cup | 60 g | 2.12 oz |
| 3/4 cup | 68 g | 2.38 oz |
| 1 cup | 90 g | 3.17 oz |
| 1 1/2 cups | 135 g | 4.76 oz |
| 2 cups | 180 g | 6.35 oz |
Grams to cups, in reverse
| Grams | Cups (approx.) |
|---|---|
| 50 g | 0.56 cups |
| 100 g | 1.11 cups |
| 200 g | 2.22 cups |
| 250 g | 2.78 cups |
| 500 g | 5.56 cups |
About this weight
Quaker label math (40 g per half cup). Rolled oats are also sold as oatmeal or old-fashioned oats; the weight is the same, and it matches the Quaker label serving math (40 g per half cup). Published charts for rolled oats (old-fashioned) typically range from 80-100 grams per cup, depending on how the cup is filled. Our figures follow a two-source policy: King Arthur's spooned-and-leveled weights for dry ingredients, and measured density for liquids. The typical published range is shown so you can see how much methods differ. For baking accuracy, weigh with a scale whenever a recipe gives grams; see why bakers weigh.
Convert any amount of rolled oats (old-fashioned) instantly with the free baking converter.