1 1/2 Cups of Oats in Grams
1 1/2 cups of rolled oats weighs 134 grams (about 4.7 oz), based on 89 g per US cup (level cup). That's the same as 24 tablespoons of rolled oats. When a recipe's outcome depends on accuracy — especially baking — weigh it instead of measuring by cup.
1 1/2 cups is one full cup plus a half (89 g + 45 g). At this size the fill method starts to matter: the error in each cup is added, not averaged.
How much is 1 1/2 cups of rolled oats?
| Grams | 134 g |
|---|---|
| Ounces (weight) | 4.7 oz |
| Tablespoons | 24 tbsp |
| Teaspoons | 72 tsp |
| Density used | 89 g per US cup |
No 1 1/2 cups measure? Use spoons
1 1/2 cups is exactly 24 tablespoons, which is 134 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 1 1/2 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 | ¾ cup | 67 g | 12 tablespoons |
| As written | 1 ½ cups | 134 g | 24 tablespoons |
| Double | 3 cups | 267 g | 48 tablespoons |
Nearby amounts
| Cups | Grams | Ounces |
|---|---|---|
| ¾ cups | 67 g | 2.4 oz |
| 1 cup | 89 g | 3.1 oz |
| 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 1 1/2 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.
1 1/2 cup of other ingredients
- 1 1/2 cup all-purpose flour in grams — 180 g
- 1 1/2 cup granulated sugar in grams — 300 g
- 1 1/2 cup powdered sugar in grams — 180 g
- 1 1/2 cup brown sugar (packed) in grams — 320 g
- 1 1/2 cup honey in grams — 510 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.