One and a Half Cups of Rolled Oats in Grams
1 1/2 cups of rolled oats weighs 135g (4.76 oz, 360ml) according to USDA FoodData Central (1 cup rolled oats = 90g, spooned and leveled method). 1 1/2 cups = 1.5 of a full cup (240ml). See the full conversion table below for all amounts from 1 tablespoon to 3 cups.
Rolled Oats Cup-to-Gram Conversion Table
Full range from 1 tablespoon to 3 cups. The highlighted row shows 1 1/2 cups.
| Amount | Grams |
|---|---|
| 1 tbsp | 5.63g |
| 2 tbsp | 11.25g |
| 1/8 cup | 11.25g |
| 1/4 cup | 22.5g |
| 1/3 cup | 30g |
| 1/2 cup | 45g |
| 2/3 cup | 60g |
| 3/4 cup | 67.5g |
| 1 cup | 90g |
| 1 1/4 cups | 112.5g |
| 1 1/2 cupsthis page | 135g |
| 1 3/4 cups | 157.5g |
| 2 cups | 180g |
| 2 1/2 cups | 225g |
| 3 cups | 270g |
Source: USDA FoodData Central (FDC ID: 20036). 1 US cup = 240ml. Values use spooned-and-leveled method.
1½ Cups of Different Ingredients — Weight Comparison
1 1/2 cups of different ingredients varies widely in weight because each has a different density. This matters when substituting ingredients in recipes.
| Ingredient | 1½ Cups (g) |
|---|---|
| Rolled Oatscurrent | 135g |
| Oat Flour | 138g |
| Steel-Cut Oats | 240g |
All values use USDA FoodData Central spooned-and-leveled method. Click any ingredient to see its full conversion table.
Measuring Rolled Oats Accurately
Why weight matters: 1 1/2 cups of rolled oats can weigh anywhere from 115g to 162g depending on how you measure it. The USDA standard is 135g (spooned and leveled). Scooping directly from the container can add 10–20% extra weight, which affects recipe results — especially in baking.
About rolled oats density: Rolled oats (old-fashioned oats) are flat and large. 1 cup = 90g. Quick oats are cut smaller — same weight per cup. Steel-cut oats are different: 1 cup = 160g (denser, unrolled). Used for granola, cookies, overnight oats.
About 1½ Cups as a Measurement
1 1/2 cups = 24 tablespoons = 360ml. This is the standard flour amount for a dozen standard-size cookies or a single-layer 8-inch cake. It bridges the gap between single-cup and double-cup recipe scales.
One and a half cups appears most often in cookie dough recipes (flour), quick bread recipes (oats or mix-ins), and pasta sauce recipes (liquid ingredients). It equals 360ml or 12 fluid ounces.
Frequently Asked Questions
How many grams is 1 1/2 cups of rolled oats?
1 1/2 cups of rolled oats weighs 135 grams (4.76 oz, 360ml). Based on USDA FoodData Central: 1 cup rolled oats = 90g, so 1 1/2 cups = 90 × 1.500 = 135g.
Is 1 1/2 cups of rolled oats the same weight every time?
The weight can vary slightly depending on measuring technique. Spooned and leveled gives 135g. Scooped (packed) can be 10–20% heavier. Sifted gives a lighter weight. The USDA standard (spooned and leveled) of 135g is the most reliable baseline for recipes.
How do I accurately measure 1 1/2 cups of rolled oats?
For accuracy, use a kitchen scale and weigh 135g of rolled oats. If using measuring cups, spoon the rolled oats lightly into a 1½ Cups measuring cup and level off the top with a straight edge. Avoid scooping directly from the container, which compacts the ingredient and adds extra weight.
How does 1 1/2 cups of rolled oats compare to other ingredients?
1 1/2 cups of different ingredients varies significantly: Rolled Oats = 135g, Oat Flour = 138g, Steel-Cut Oats = 240g. This is because each ingredient has a different density.