Cooking
Cups to grams: rolled oats
Convert US cups of uncooked rolled (old-fashioned) oats to grams. Quick-cooking and instant oats are lighter; steel-cut oats are heavier — weigh if you can.
cups
g
g = cups × 90
Quick reference
| Common amount | cups | g |
|---|---|---|
| 1/4 cup | 0.25 cups | 22.5 g |
| 1/2 cup | 0.5 cups | 45 g |
| 3/4 cup | 0.75 cups | 67.5 g |
| 1 cup | 1 cups | 90 g |
| 1 1/2 cups | 1.5 cups | 135 g |
| 2 cups | 2 cups | 180 g |
About this conversion
One US cup of uncooked rolled oats weighs about 90 g. Steel-cut oats are denser (≈170 g/cup); instant oats are looser (≈80 g/cup). Cooked porridge expands roughly threefold, so 1 cup dry ≈ 3 cups cooked.