One and a Half Cups of Peanut Butter in Grams
1 1/2 cups of peanut butter weighs 387g (13.65 oz, 360ml) according to USDA FoodData Central (1 cup peanut butter = 258g, 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.
Peanut Butter 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 | 16.13g |
| 2 tbsp | 32.25g |
| 1/8 cup | 32.25g |
| 1/4 cup | 64.5g |
| 1/3 cup | 86g |
| 1/2 cup | 129g |
| 2/3 cup | 172g |
| 3/4 cup | 193.5g |
| 1 cup | 258g |
| 1 1/4 cups | 322.5g |
| 1 1/2 cupsthis page | 387g |
| 1 3/4 cups | 451.5g |
| 2 cups | 516g |
| 2 1/2 cups | 645g |
| 3 cups | 774g |
Source: USDA FoodData Central (FDC ID: 16098). 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) |
|---|---|
| Chopped Pecans | 163.5g |
| Chopped Walnuts | 180g |
| Cashews (whole) | 195g |
| Pine Nuts | 202.5g |
| Peanut Buttercurrent | 387g |
All values use USDA FoodData Central spooned-and-leveled method. Click any ingredient to see its full conversion table.
Measuring Peanut Butter Accurately
Why weight matters: 1 1/2 cups of peanut butter can weigh anywhere from 329g to 464g depending on how you measure it. The USDA standard is 387g (spooned and leveled). Scooping directly from the container can add 10–20% extra weight, which affects recipe results — especially in baking.
About peanut butter density: Peanut butter density depends heavily on style. Creamy/smooth: 1 cup = 258g. Natural peanut butter (oil separated): similar weight but harder to measure consistently. Crunchy adds variability. 2 tablespoons peanut butter = ~32g.
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 peanut butter?
1 1/2 cups of peanut butter weighs 387 grams (13.65 oz, 360ml). Based on USDA FoodData Central: 1 cup peanut butter = 258g, so 1 1/2 cups = 258 × 1.500 = 387g.
Is 1 1/2 cups of peanut butter the same weight every time?
The weight can vary slightly depending on measuring technique. Spooned and leveled gives 387g. Scooped (packed) can be 10–20% heavier. Sifted gives a lighter weight. The USDA standard (spooned and leveled) of 387g is the most reliable baseline for recipes.
How do I accurately measure 1 1/2 cups of peanut butter?
For accuracy, use a kitchen scale and weigh 387g of peanut butter. If using measuring cups, spoon the peanut butter 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 peanut butter compare to other ingredients?
1 1/2 cups of different ingredients varies significantly: Chopped Pecans = 163.5g, Chopped Walnuts = 180g, Cashews (whole) = 195g. This is because each ingredient has a different density.