One-Third Cup of Baking Soda in Grams
1/3 cup of baking soda weighs 76.67g (2.7 oz, 80ml) according to USDA FoodData Central (1 cup baking soda = 230g, spooned and leveled method). 1/3 cup = 0.3333 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 1/3 cup.
| Amount | Grams |
|---|---|
| 1 tbsp | 14.38g |
| 2 tbsp | 28.75g |
| 1/8 cup | 28.75g |
| 1/4 cup | 57.5g |
| 1/3 cupthis page | 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 cups | 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.
1/3 Cup of Different Ingredients — Weight Comparison
1/3 cup of different ingredients varies widely in weight because each has a different density. This matters when substituting ingredients in recipes.
| Ingredient | 1/3 Cup (g) |
|---|---|
| Active Dry Yeast | 45.33g |
| Baking Powder | 76.67g |
| Baking Sodacurrent | 76.67g |
| Cream of Tartar | 79.67g |
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: 1/3 cup of baking soda can weigh anywhere from 65g to 92g depending on how you measure it. The USDA standard is 76.67g (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 1/3 Cup as a Measurement
1/3 cup = 5 tablespoons + 1 teaspoon = 80ml. This unusual fraction appears in recipes that scale for 2 servings from a 3-serving base. It cannot be made from combining standard 1/4 and 1/8 cup measures without error.
One-third cup is common in yogurt parfait recipes, small-batch granola bars, and single-layer cake recipes scaled for 2 servings. It is exactly 80ml in metric volume.
Frequently Asked Questions
How many grams is 1/3 cup of baking soda?
1/3 cup of baking soda weighs 76.67 grams (2.7 oz, 80ml). Based on USDA FoodData Central: 1 cup baking soda = 230g, so 1/3 cup = 230 × 0.333 = 76.67g.
Is 1/3 cup of baking soda the same weight every time?
The weight can vary slightly depending on measuring technique. Spooned and leveled gives 76.67g. Scooped (packed) can be 10–20% heavier. Sifted gives a lighter weight. The USDA standard (spooned and leveled) of 76.67g is the most reliable baseline for recipes.
How do I accurately measure 1/3 cup of baking soda?
For accuracy, use a kitchen scale and weigh 76.67g of baking soda. If using measuring cups, spoon the baking soda lightly into a 1/3 Cup 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 1/3 cup of baking soda compare to other ingredients?
1/3 cup of different ingredients varies significantly: Active Dry Yeast = 45.33g, Baking Powder = 76.67g, Baking Soda = 76.67g. This is because each ingredient has a different density.