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Rolled oats: cups to grams
One US cup of rolled oats weighs 90 g, and one tablespoon weighs 5.6 g. Convert any amount below, in either direction.
rolled oats
90 g
3.2 oz
of rolled oats
Old-fashioned rolled oats, loosely filled. Quick oats pack tighter, closer to 100 g.
Rolled oats conversion table
Every amount a recipe is likely to ask for. Half a cup is 45 g.
| Rolled oats | Grams | Ounces |
|---|---|---|
| 1 teaspoon | 1.9 g | 0.1 oz |
| 1 tablespoon | 5.6 g | 0.2 oz |
| 1/4 cup | 23 g | 0.8 oz |
| 1/3 cup | 30 g | 1.1 oz |
| 1/2 cup | 45 g | 1.6 oz |
| 2/3 cup | 60 g | 2.1 oz |
| 3/4 cup | 68 g | 2.4 oz |
| 1 cup | 90 g | 3.2 oz |
| 1 1/2 cups | 135 g | 4.8 oz |
| 2 cups | 180 g | 6.3 oz |
| 3 cups | 270 g | 9.5 oz |
| 4 cups | 360 g | 12.7 oz |
Old-fashioned rolled oats, loosely filled. Quick oats pack tighter, closer to 100 g.
Other flours & grains
- all-purpose flour, 120 g per cup
- bread flour, 127 g per cup
- whole wheat flour, 113 g per cup
- cake flour, 113 g per cup
- almond flour, 96 g per cup
- cornstarch, 120 g per cup
- rice, 185 g per cup
- quinoa, 170 g per cup
- breadcrumbs, 108 g per cup
Questions
How many grams is a cup of rolled oats?
90 g. That is one US customary cup, 236.6 ml. Old-fashioned rolled oats, loosely filled. Quick oats pack tighter, closer to 100 g.
How many grams is a tablespoon of rolled oats?
5.6 g. A tablespoon is a sixteenth of a cup. A teaspoon of rolled oats is 1.9 g.
Which cup does this use?
The US customary cup, 236.6 ml, which is the one American recipes mean. A UK or Australian metric cup is 250 ml, about 6% larger, and a Japanese cup is 200 ml. If your recipe is metric, type the millilitres in directly.
Why is my cup of flour heavier than 120 g?
Because of how you filled it. Scooping straight from the bag compacts the flour and can give you 145 g or more; the standard 120 g assumes you spooned it in and levelled it off. That 20% swing is the reason bakers weigh instead of scooping, and it is why halved and doubled recipes go wrong so often.
Are these conversions exact?
They are the standard US baking-reference values, and each ingredient page says how the cup was filled to get its number. For liquids and sugars they are good to within a gram or two. For anything fluffy or packable, like flour, brown sugar or grated cheese, measuring by volume carries more error than the conversion does.
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