Baking Soda grams to cups
One US cup of baking soda weighs about 220 grams.
Pure sodium bicarbonate, which needs an acid in the recipe to do anything at all. It is roughly four times stronger than baking powder, so quantities are small.
Convert Baking Soda
Enter an amount to see the conversion.
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Based on g per cup. Approximate — density varies with packing and brand.
Baking Soda conversion chart
Generated from 220 grams per cup.
| Grams | Cups | In the kitchen |
|---|---|---|
| 25 g | 0.11 | 1 tbsp + 2 tsp |
| 50 g | 0.23 | 3 tbsp + 2 tsp |
| 75 g | 0.34 | 1/3 cup |
| 100 g | 0.45 | 1/3 cup + 2 tbsp |
| 125 g | 0.57 | 1/2 cup + 1 tbsp |
| 150 g | 0.68 | 2/3 cup + 1 tsp |
| 200 g | 0.91 | 3/4 cup + 2 tbsp + 2 tsp |
| 250 g | 1.14 | 1 cup + 2 tbsp + 1 tsp |
| 300 g | 1.36 | 1 1/3 cups + 1 tsp |
| 400 g | 1.82 | 1 3/4 cups + 1 tbsp |
| 500 g | 2.27 | 2 1/4 cups + 1 tsp |
| 750 g | 3.41 | 3 1/3 cups + 1 tbsp + 1 tsp |
| 1000 g | 4.55 | 4 1/2 cups + 2 tsp |
Baking Soda cups to grams
The other direction, for following a recipe written in cups with a scale on the counter.
| Cups | Weight | In ounces |
|---|---|---|
| 1/8 cup | 28 g | 1 oz |
| 1/4 cup | 55 g | 1.9 oz |
| 1/3 cup | 73 g | 2.6 oz |
| 1/2 cup | 110 g | 3.9 oz |
| 2/3 cup | 147 g | 5.2 oz |
| 3/4 cup | 165 g | 5.8 oz |
| 1 cup | 220 g | 7.8 oz |
| 1 1/2 cups | 330 g | 11.6 oz |
| 2 cups | 440 g | 15.5 oz |
Baking Soda in tablespoons, teaspoons and millilitres
Cup fractions stop being useful below about a quarter of a cup. These are the measures to reach for when the amount is small.
1 US cup
220 g
1 tablespoon
14 g
1 teaspoon
4.6 g
100 millilitres
93 g
One US cup is 16 tablespoons or 48 teaspoons, whatever is in it — those two are volume measures, so no density is involved.
Measuring notes
Never substitute baking soda for baking powder by volume. Without buttermilk, yoghurt, cocoa or another acid present, it leaves a soapy taste.
Where this figure comes from: Common culinary reference value — pending primary-source check. This value is still being checked against a primary source.
Baking Soda — common questions
How many cups is 100 grams?
It depends entirely on the ingredient. 100 grams of all-purpose flour is about 0.83 cups, but 100 grams of honey is only about 0.29 cups, because honey is far denser. Grams measure weight and cups measure volume, so there is no single conversion that works for everything.
Why do different converters give different answers?
Mostly because they assume different measuring techniques. Flour spooned gently into a cup weighs around 120 grams; the same cup dipped straight into the bag can hold 140 grams. Both figures are defensible, so two sites can disagree by 15% and neither is lying. We publish separate figures for each technique rather than picking one.
Are these conversions exact?
No, and no weight-to-volume conversion can be. Density shifts with packing, humidity, grind and brand. Treat every result here as a close approximation. If precision matters, weigh your ingredients.
Should I use grams or cups?
Grams, whenever you have a scale. Weight does not change with how you fill the cup, so it is reproducible, and weighing straight into the bowl means less washing up. Cups are convenient, not accurate.
Which cup size do you use?
The US cup, 236.6 millilitres. A metric cup is 250 ml and an imperial cup is about 284 ml, so if you are following a British or Australian recipe our figures will run slightly small.
Common amounts
Each of these works one weight of baking soda through in full.