3 Cups of Oats in Grams
3 cups of rolled oats weighs 267 grams (about 9.4 oz), based on 89 g per US cup (level cup). That's the same as 48 tablespoons of rolled oats. When a recipe's outcome depends on accuracy — especially baking — weigh it instead of measuring by cup.
3 cups is batch territory — a cup-measuring error is multiplied three times over, which for rolled oats is the difference between 267 g and something noticeably off. Weigh it if you can.
How much is 3 cups of rolled oats?
| Grams | 267 g |
|---|---|
| Ounces (weight) | 9.4 oz |
| Tablespoons | 48 tbsp |
| Teaspoons | 144 tsp |
| Density used | 89 g per US cup |
No 3 cups measure? Use spoons
3 cups is exactly 48 tablespoons, which is 267 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 3 cups
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 | 1 ½ cups | 134 g | 24 tablespoons |
| As written | 3 cups | 267 g | 48 tablespoons |
| Double | 6 cups | 534 g | 96 tablespoons |
Nearby amounts
| Cups | Grams | Ounces |
|---|---|---|
| 1½ cups | 134 g | 4.7 oz |
| 2 cups | 178 g | 6.3 oz |
| 3 cups | 267 g | 9.4 oz |
Every cup fraction of oats in grams — the full chart.
How to measure 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.
3 cup of other ingredients
- 3 cup all-purpose flour in grams — 360 g
- 3 cup granulated sugar in grams — 600 g
- 3 cup powdered sugar in grams — 360 g
- 3 cup brown sugar (packed) in grams — 639 g
- 3 cup honey in grams — 1020 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.