One and a Half Cups of Baking Soda in Grams
1 1/2 cups of baking soda weighs 345g (12.17 oz, 360ml) according to USDA FoodData Central (1 cup baking soda = 230g, 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.
Baking Soda 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 | 14.38g |
| 2 tbsp | 28.75g |
| 1/8 cup | 28.75g |
| 1/4 cup | 57.5g |
| 1/3 cup | 76.67g |
| 1/2 cup | 115g |
| 2/3 cup | 153.33g |
| 3/4 cup | 172.5g |
| 1 cup | 230g |
| 1 1/4 cups | 287.5g |
| 1 1/2 cupsthis page | 345g |
| 1 3/4 cups | 402.5g |
| 2 cups | 460g |
| 2 1/2 cups | 575g |
| 3 cups | 690g |
Source: USDA FoodData Central (FDC ID: 18373). 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) |
|---|---|
| Active Dry Yeast | 204g |
| Baking Powder | 345g |
| Baking Sodacurrent | 345g |
| Cream of Tartar | 358.5g |
All values use USDA FoodData Central spooned-and-leveled method. Click any ingredient to see its full conversion table.
Measuring Baking Soda Accurately
Why weight matters: 1 1/2 cups of baking soda can weigh anywhere from 293g to 414g depending on how you measure it. The USDA standard is 345g (spooned and leveled). Scooping directly from the container can add 10–20% extra weight, which affects recipe results — especially in baking.
About baking soda density: Baking soda (sodium bicarbonate) is 3-4x more powerful than baking powder. 1 teaspoon = 4.6g. Requires an acid (buttermilk, vinegar, lemon juice) to activate. Substituting requires adjusting recipe acid content.
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 baking soda?
1 1/2 cups of baking soda weighs 345 grams (12.17 oz, 360ml). Based on USDA FoodData Central: 1 cup baking soda = 230g, so 1 1/2 cups = 230 × 1.500 = 345g.
Is 1 1/2 cups of baking soda the same weight every time?
The weight can vary slightly depending on measuring technique. Spooned and leveled gives 345g. Scooped (packed) can be 10–20% heavier. Sifted gives a lighter weight. The USDA standard (spooned and leveled) of 345g is the most reliable baseline for recipes.
How do I accurately measure 1 1/2 cups of baking soda?
For accuracy, use a kitchen scale and weigh 345g of baking soda. If using measuring cups, spoon the baking soda 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 baking soda compare to other ingredients?
1 1/2 cups of different ingredients varies significantly: Active Dry Yeast = 204g, Baking Powder = 345g, Baking Soda = 345g. This is because each ingredient has a different density.