⅓ cup of baking soda in grams
⅓ cup of baking soda ≈ 73 g = 2.59 oz · 79 mL by volume · at 220 g per cup, spooned and leveled. Use the converter below for any amount or ingredient.
Result: …
Formula
grams = cups × 220 (baking soda)
Why weight beats volume for baking soda
A cup is a volume; a recipe cares about mass. Baking soda runs about 220 g per US cup measured spoon-and-level, but packing, humidity, and grind can move that by ±10%. Weighing removes the guesswork, which is exactly why serious baking recipes list grams.
Baking soda: cups to grams table
| Amount | Grams | Ounces |
|---|---|---|
| ¼ cup | 55 g | 1.94 oz |
| ⅓ cup (this page) | 73 g | 2.59 oz |
| ½ cup | 110 g | 3.88 oz |
| ⅔ cup | 147 g | 5.17 oz |
| ¾ cup | 165 g | 5.82 oz |
| 1 cup | 220 g | 7.76 oz |
| 1½ cups | 330 g | 11.64 oz |
| 2 cups | 440 g | 15.52 oz |
| 3 cups | 660 g | 23.28 oz |
Frequently asked questions
How many grams is ⅓ cup of baking soda?
⅓ cup of baking soda is about 73 g (2.59 oz), based on 220 g per US cup, measured spoon-and-level.
Why does the ingredient change the answer?
Cups measure volume, grams measure weight. Dense ingredients pack more weight into the same cup: a cup of honey is 340 g while a cup of rolled oats is only 90 g. That is why generic cup-to-gram converters get recipes wrong.
Does it matter how I fill the cup?
Yes, these figures assume you spoon the ingredient into the cup and level it off. Scooping, packing, or tapping the cup can change the weight by 10% or more, which is why bakers prefer a scale.
Is this a US cup or a metric cup?
A US customary cup (236.6 mL). A metric cup is 250 mL, about 5.7% bigger, and old UK recipes use a 284 mL imperial cup. ⅓ cup here is 79 mL by volume.