100 Grams of Oats to Cups
100 grams of rolled oats equals 1 ⅛ cups (1.12 US cups), based on 89 g per cup (level cup). In the kitchen, measure 1 cup + 2 tbsp. For best results, weigh rolled oats with a scale — cup measurements vary with how the cup is filled.
| US cups | 1 ⅛ cups (1.12 cups) |
|---|---|
| Measured as | 1 cup + 2 tbsp |
| Ounces (weight) | 3.5 oz |
| Tablespoons (level) | about 18 tbsp |
| Density used | 89 g per US cup |
How to measure 100 g of rolled oats without a scale
Rolled oats are light and irregular — a level cup is only about 89 g. Scoop-and-level is fine; the flakes don’t compact much. Quick oats weigh nearly the same, but steel-cut oats are much denser and don’t substitute by volume.
Nearby amounts
| Grams | Cups | Decimal |
|---|---|---|
| 50 g | ½ cup | 0.56 |
| 75 g | ⅞ cup | 0.84 |
| 125 g | 1 ⅜ cups | 1.4 |
| 150 g | 1 ⅔ cups | 1.69 |
100 grams of other ingredients
The same weight fills a very different cup depending on density — that's why "grams to cups" always needs the ingredient:
- 100 g of all-purpose flour to cups — ⅞ cup
- 100 g of granulated sugar to cups — ½ cup
- 100 g of powdered sugar to cups — ⅞ cup
- 100 g of brown sugar (packed) to cups — ½ cup
- 100 g of honey to cups — ⅓ cup
Convert another amount
250 g Rolled oats (old-fashioned) = 2 ¾ cups
Exactly 2.81 cups — or measure 2 cups + 13 tbsp.
More oats conversions: the full grams-to-cups oats chart · 1 cup of rolled oats in grams
Density 89 g/cup — sources: King Arthur Baking ingredient weight chart, Quaker nutrition label, USDA FoodData Central. Data verified 2026-08-20. Methodology.