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Rolled oats grams to cups
One US cup of rolled oats weighs 81 g, a tablespoon 5.06 g and a teaspoon 1.69 g. So 100 g of rolled oats is 1 ¼ cups (1.23 cups).
100 grams of rolled oats = 1.23 cups
Measure it: 1 ¼ cups
Rolled oats grams to cups chart
| Grams | US cups | How to measure | Tablespoons |
|---|---|---|---|
| 25 g | 0.309 | ⅛ cup + 3 tbsp | 4.94 |
| 50 g | 0.617 | ½ cup + 2 tbsp | 9.88 |
| 75 g | 0.926 | ¾ cup + 3 tbsp | 14.8 |
| 100 g | 1.23 | 1 ¼ cups | 19.8 |
| 125 g | 1.54 | 1 ½ cups + 2 tsp | 24.7 |
| 150 g | 1.85 | 1 ⅔ cups + 3 tbsp | 29.6 |
| 200 g | 2.47 | 2 ½ cups | 39.5 |
| 250 g | 3.09 | 3 ⅛ cups | 49.4 |
| 300 g | 3.7 | 3 ⅔ cups | 59.3 |
| 400 g | 4.94 | 5 cups | 79 |
| 500 g | 6.17 | 6 ⅛ cups | 98.8 |
| 1000 g | 12.3 | 12 ⅓ cups | 198 |
Cups of rolled oats to grams
| Cups | Grams | Ounces |
|---|---|---|
| ⅛ cup | 10.1 g | 0.357 oz |
| ¼ cup | 20.3 g | 0.714 oz |
| ⅓ cup | 27 g | 0.952 oz |
| ½ cup | 40.5 g | 1.43 oz |
| ⅔ cup | 54 g | 1.9 oz |
| ¾ cup | 60.8 g | 2.14 oz |
| 1 cup | 81 g | 2.86 oz |
| 1½ cups | 122 g | 4.29 oz |
| 2 cups | 162 g | 5.71 oz |
| 3 cups | 243 g | 8.57 oz |
| 4 cups | 324 g | 11.4 oz |
Where 81 g comes from
USDA FoodData Central: 1 cup of “Cereals, oats, regular and quick, not fortified, dry” = 81 g. FDC 173904
King Arthur Baking ingredient weight chart (“Oats (old-fashioned or quick-cooking)”): 89 g per cup. Chart
This page uses 81 g (USDA). The two sources differ by 8 g (9.88%): that gap is about how firmly the cup is filled, not an error in either.
Dry rolled or quick oats weigh about 81 g a cup in USDA's data and 89 g by King Arthur. Some charts say 156 g: that figure is for whole oat groats, not the flakes in your pantry.
How to measure rolled oats by the cup
Fill the cup, give it a shake so the pieces settle, and level the top with your hand. Don't press down.
In the UK and Australia: porridge oats. Metric cups there hold 250 ml, so a metric cup of rolled oats weighs about 85.6 g.
Questions
How many cups is 100 g of rolled oats?
1 ¼ cups (1.23 cups), measured the spoon-and-level way.
How many grams is 1 cup of rolled oats?
81 g according to USDA FoodData Central; King Arthur's chart says 89 g.
How many grams in a tablespoon of rolled oats?
About 5.06 g; a teaspoon is 1.69 g.
How many cups is 500 g of rolled oats?
6 ⅛ cups (6.17 cups).