2/3 Cup of Oats in Grams
2/3 cup of rolled oats weighs 59 grams (about 2.1 oz), based on 89 g per US cup (level cup). That's the same as 10.7 tablespoons of rolled oats. When a recipe's outcome depends on accuracy — especially baking — weigh it instead of measuring by cup.
Few measuring sets include a 2/3 cup, so this is normally 2 × 1/3 cup (30 g each). Without a 1/3 measure either, 10 tablespoons + 2 teaspoons is exact.
How much is 2/3 cup of rolled oats?
| Grams | 59 g |
|---|---|
| Ounces (weight) | 2.1 oz |
| Tablespoons | 10.7 tbsp |
| Teaspoons | 32 tsp |
| Density used | 89 g per US cup |
No 2/3 cup measure? Use spoons
2/3 cup is exactly 10 tablespoons + 2 teaspoons, which is 59 g of rolled oats. Measuring spoons are stamped to a tighter tolerance than cups, so for small amounts the spoon route is usually the more accurate one even when you do own the cup.
Halving and doubling 2/3 cup
Scaling a recipe is the usual reason this conversion comes up, and grams scale cleanly where cup fractions do not:
| Recipe | Cups | Grams | Spoons |
|---|---|---|---|
| Half | ⅓ cup | 30 g | 5 tablespoons + 1 teaspoon |
| As written | ⅔ cup | 59 g | 10 tablespoons + 2 teaspoons |
| Double | 1 ⅓ cups | 119 g | 21 tablespoons + 1 teaspoon |
Nearby amounts
| Cups | Grams | Ounces |
|---|---|---|
| ⅓ cups | 30 g | 1.1 oz |
| ½ cups | 45 g | 1.6 oz |
| ⅔ cups | 59 g | 2.1 oz |
| ¾ cups | 67 g | 2.4 oz |
| 1 cup | 89 g | 3.1 oz |
Every cup fraction of oats in grams — the full chart.
How to measure 2/3 cup of rolled oats
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.
2/3 cup of other ingredients
- 2/3 cup all-purpose flour in grams — 80 g
- 2/3 cup granulated sugar in grams — 133 g
- 2/3 cup powdered sugar in grams — 80 g
- 2/3 cup brown sugar (packed) in grams — 142 g
- 2/3 cup honey in grams — 227 g
Convert another amount
250 cups Rolled oats (old-fashioned) = 22250 g
Based on 89 g per US cup.
Reverse conversion: grams of oats to cups.
Density 89 g/cup — sources: King Arthur Baking ingredient weight chart, Quaker nutrition label, USDA FoodData Central. Data verified 2026-08-20. Methodology.