Baking soda, Cups to Grams & Grams to Cups
1 cup of baking soda = 230 grams · 100g = 0.43 cups
Baking soda (bicarbonate of soda) is dense and fine, so a cup weighs about 230 grams — but you will essentially never use a cup of it. It is measured in teaspoons (about 4.6g each) because it is a powerful leavener that needs an acid to activate. Too much leaves a soapy, metallic taste.
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Baking soda cups to grams table
| Cups | Grams | Ounces | Tablespoons |
|---|---|---|---|
| 1/8 | 28.8 g | 1.01 oz | 2 |
| 1/4 | 57.5 g | 2.03 oz | 4 |
| 1/3 | 76.6 g | 2.7 oz | 5.33 |
| 1/2 | 115 g | 4.06 oz | 8 |
| 2/3 | 153 g | 5.41 oz | 10.7 |
| 3/4 | 172 g | 6.08 oz | 12 |
| 1 | 230 g | 8.11 oz | 16 |
| 1 1/2 | 345 g | 12.2 oz | 24 |
| 2 | 460 g | 16.2 oz | 32 |
| 3 | 690 g | 24.3 oz | 48 |
Baking soda grams to cups table
Working the other way? Here's how many cups common gram weights of baking soda come to, handy when a recipe lists baking soda in grams but you only have cup measures.
| Grams | Cups | Ounces | Tablespoons |
|---|---|---|---|
| 25 g | 0.11 | 0.88 oz | 1.74 |
| 50 g | 0.22 | 1.76 oz | 3.48 |
| 75 g | 0.33 | 2.65 oz | 5.22 |
| 100 g | 0.43 | 3.53 oz | 6.96 |
| 125 g | 0.54 | 4.41 oz | 8.7 |
| 150 g | 0.65 | 5.29 oz | 10.4 |
| 175 g | 0.76 | 6.17 oz | 12.2 |
| 200 g | 0.87 | 7.05 oz | 13.9 |
| 225 g | 0.98 | 7.94 oz | 15.7 |
| 250 g | 1.09 | 8.82 oz | 17.4 |
| 300 g | 1.3 | 10.6 oz | 20.9 |
| 350 g | 1.52 | 12.3 oz | 24.3 |
| 400 g | 1.74 | 14.1 oz | 27.8 |
| 500 g | 2.17 | 17.6 oz | 34.8 |
Baking soda: US, metric & UK cups compared
A “cup” isn’t the same size everywhere, so 1 cup of baking soda weighs a different number of grams depending on which cup your recipe uses. The US cup is 236.6 ml, while Australia, New Zealand, Canada and modern UK recipes use a 250 ml metric cup. Here’s 1 cup of baking soda in each:
| Cup standard | Size | 1 cup baking soda | Used in |
|---|---|---|---|
| US cup | 237 ml | 230 g | United States (most US recipe sites) |
| Metric cup | 250 ml | 243 g | Australia, NZ, Canada & modern UK |
| UK imperial cup | 284 ml | 276 g | Older British recipes |
| Japanese cup | 200 ml | 194 g | Japan |
Unless a recipe says otherwise, US recipes mean the US cup and Australian/UK recipes mean the 250 ml metric cup. The tables higher up this page use the US cup.
Related ingredients
Quick reference: Baking soda in grams
- ⅛ cup baking soda = 28.8g
- ¼ cup baking soda = 57.5g
- ⅓ cup baking soda = 76.6g
- ½ cup baking soda = 115g
- ⅔ cup baking soda = 153g
- ¾ cup baking soda = 172g
- 1 cup baking soda = 230g
- 2 cups baking soda = 460g
How many cups is 100g, 200g or 300g of baking soda?
Because one cup of baking soda weighs about 230 grams, you can convert any weight to cups by dividing by 230. So 100g of baking soda is about 0.43 cups, 200g is about 0.87 cups, 250g is about 1.09 cups, and 300g is about 1.3 cups. For any other amount, type the grams straight into the converter above and switch it to show cups.
How to measure baking soda accurately
For the most reliable baking results, weigh baking soda on a kitchen scale rather than scooping by volume. One US cup of baking soda weighs about 230 grams (8.11 oz), but the exact figure changes with how tightly it's packed and the brand. Scooping straight from the bag compacts baking soda and can leave you 15 to 20% over, so spoon it into the cup and level it off for the closest match to the figures above. Use the tables for quick reference, or the converter for any custom amount in cups, grams, ounces or tablespoons.
Tip: Measure baking soda in level teaspoons, not by eye; even a small excess produces an unpleasant soapy flavour and over-browning.
Baking soda conversions: common questions
How many grams are in a cup of baking soda?
One US cup of baking soda weighs approximately 230 grams (8.11 oz).
How many grams in half a cup of baking soda?
Half a cup (½ cup) of baking soda weighs approximately 115 grams.
How many grams in a quarter cup of baking soda?
A quarter cup (¼ cup) of baking soda weighs approximately 57.5 grams.
How do I convert baking soda from cups to grams?
Multiply the number of cups by 230. For example, 2 cups of baking soda = 460 grams, and ¾ cup = 172 grams.
How many cups is 100g of baking soda?
100 grams of baking soda is about 0.43 cups. 200g is about 0.87 cups and 300g is about 1.3 cups, since 1 cup weighs 230 grams.
How many grams in a metric (Australian) cup of baking soda?
One 250 ml metric cup of baking soda, used in Australia, New Zealand, Canada and modern UK recipes, weighs about 243 grams, compared with 230 grams for a 236.6 ml US cup.