One and a Half Cups of Oat Flour in Grams
1 1/2 cups of oat flour weighs 138g (4.87 oz, 360ml) according to USDA FoodData Central (1 cup oat flour = 92g, 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.
Oat Flour 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 | 5.75g |
| 2 tbsp | 11.5g |
| 1/8 cup | 11.5g |
| 1/4 cup | 23g |
| 1/3 cup | 30.67g |
| 1/2 cup | 46g |
| 2/3 cup | 61.33g |
| 3/4 cup | 69g |
| 1 cup | 92g |
| 1 1/4 cups | 115g |
| 1 1/2 cupsthis page | 138g |
| 1 3/4 cups | 161g |
| 2 cups | 184g |
| 2 1/2 cups | 230g |
| 3 cups | 276g |
Source: USDA FoodData Central (FDC ID: 20038). 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 Oats | 135g |
| Oat Flourcurrent | 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 Oat Flour Accurately
Why weight matters: 1 1/2 cups of oat flour can weigh anywhere from 117g to 166g depending on how you measure it. The USDA standard is 138g (spooned and leveled). Scooping directly from the container can add 10–20% extra weight, which affects recipe results — especially in baking.
About oat flour density: Oat flour is lighter than all-purpose flour. 1 cup = 92g. Can be made at home by blending rolled oats. Has a mild, slightly sweet flavor. Good for pancakes, muffins.
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 oat flour?
1 1/2 cups of oat flour weighs 138 grams (4.87 oz, 360ml). Based on USDA FoodData Central: 1 cup oat flour = 92g, so 1 1/2 cups = 92 × 1.500 = 138g.
Is 1 1/2 cups of oat flour the same weight every time?
The weight can vary slightly depending on measuring technique. Spooned and leveled gives 138g. Scooped (packed) can be 10–20% heavier. Sifted gives a lighter weight. The USDA standard (spooned and leveled) of 138g is the most reliable baseline for recipes.
How do I accurately measure 1 1/2 cups of oat flour?
For accuracy, use a kitchen scale and weigh 138g of oat flour. If using measuring cups, spoon the oat flour 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 oat flour 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.