Convert Cups to Grams: Baking Soda
Convert cups of baking soda to grams with this complete reference table. 1 cup of baking soda = 230g (USDA FoodData Central, spooned-and-leveled method). Use the table below for fractions from 1/8 cup up to 4 cups. For precision baking, weight measurements in grams are always more reliable than volume measurements in cups, because baking soda density can vary by measuring technique.
Baking Soda Cups to Grams Table
| Cups | Grams |
|---|---|
| 1/8 cup | 28.8g |
| 1/4 cup | 57.5g |
| 1/3 cup | 76.7g |
| 1/2 cup | 115g |
| 2/3 cup | 153.3g |
| 3/4 cup | 172.5g |
| 1 cup | 230g |
| 1 1/4 cups | 287.5g |
| 1 1/2 cups | 345g |
| 2 cups | 460g |
| 3 cups | 690g |
| 4 cups | 920g |
Based on USDA FoodData Central data (1 US cup = 240ml = 16 tablespoons = 48 teaspoons). Note: 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 Baking Soda Density
The density of baking soda determines how much it weighs per unit of volume. At 0.9g/ml, 1 US cup (240ml) of baking soda weighs 230g under USDA standard conditions.
Volume measurements can vary by ±10–20% depending on technique (sifted vs. spooned vs. scooped). For consistent baking results, use a kitchen scale with gram measurements whenever possible. The USDA standard (spooned-and-leveled) is the reference point for all values on this page.
Frequently Asked Questions
How many grams is 1 cup of baking soda?
1 cup of baking soda weighs 230 grams (USDA FoodData Central, spooned-and-leveled method, 1 US cup = 240ml).
How many grams is 1/2 cup of baking soda?
1/2 cup of baking soda weighs 115 grams.
How many grams is 1/4 cup of baking soda?
1/4 cup of baking soda weighs 58 grams.
Does measuring technique affect the weight of baking soda?
Yes. Sifted baking soda can weigh up to 20% less than packed or scooped. The USDA standard (spooned-and-leveled) of 230g/cup is the most reliable baseline.