Leaveners, Salt & Spices
Convert grams of baking soda to cups
One gram of baking soda weighs about 0.0045 cup, and half a gram comes to roughly 0.0023 cup. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 g of baking soda =
0.0045 cup
About 0 cup in recipe notation
- ml
- 1.08
- tbsp
- 0.073
Baking Soda: 220 g per US cup · NIST Handbook 133. 1 teaspoon = 4.6 g. Baking soda is roughly 3–4 times stronger than baking powder, so never swap 1:1.
Full baking soda chart →Baking Soda at a glance
Every number on this page comes from a single figure: 220 grams per US cup (NIST Handbook 133).
- 1 cup
- 220 g
- 1 tablespoon
- 13.8 g
- 1 teaspoon
- 4.58 g
- 1 cup in ounces
- 7.76 oz
- 100 g in cups
- 0.455 cups
- Density
- 0.93 g/ml
grams to cups chart for baking soda
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Grams | Cups (US) | Tablespoons (US) | Millilitres |
|---|---|---|---|
| 10 g | 0.045 cup | 0.727 tbsp | 10.8 ml |
| 25 g | 0.114 cup | 1.82 tbsp | 26.9 ml |
| 50 g | 0.227 cup | 3.64 tbsp | 53.8 ml |
| 75 g | 0.341 cup | 5.45 tbsp | 80.7 ml |
| 100 g | 0.455 cup | 7.27 tbsp | 108 ml |
| 125 g | 0.568 cup | 9.09 tbsp | 134 ml |
| 150 g | 0.682 cup | 10.9 tbsp | 161 ml |
| 200 g | 0.909 cup | 14.5 tbsp | 215 ml |
| 250 g | 1.14 cup | 18.2 tbsp | 269 ml |
| 500 g | 2.27 cup | 36.4 tbsp | 538 ml |
| 1000 g | 4.55 cup | 72.7 tbsp | 1075 ml |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat baking soda as 220 g per US customary cup, which works out to 0.930 g/ml. From there:
- Your grams figure is converted into millilitres or grams using standard unit sizes (g = 1 g).
- The density above bridges volume and weight in whichever direction you need.
- The result is rounded the way a cook would round it — to the nearest gram, or to a usable fraction such as 1/2 cups.
Measuring baking soda accurately
1 teaspoon = 4.6 g. Baking soda is roughly 3–4 times stronger than baking powder, so never swap 1:1.
If a recipe matters to you — bread, macarons, anything with a tight hydration or ratio — weigh it. A £10 digital scale removes the single largest source of variation in home baking, and it is faster than washing three measuring cups.
When cups are fine
- Liquids measured in a proper jug, where volume is the honest unit anyway.
- Forgiving savoury cooking: soups, stews, stir-fries, marinades.
- Small amounts of leaveners and spices, as long as you use level spoons.
Frequently asked questions
How many cups are in 1 gram of baking soda?
1 gram of baking soda is 0.0045 cup. This is based on a density of 220 g per US cup.
How many cups are in 2 grams of baking soda?
2 grams of baking soda is 0.0091 cup, and 0.0023 cup for half a gram.
How much is 100 g of baking soda in cups?
100 g of baking soda is about 1/2 cups. Weight is always the more reliable measurement, so use a scale when the recipe gives grams.
Why do other sites give a different number for baking soda?
1 teaspoon = 4.6 g. Baking soda is roughly 3–4 times stronger than baking powder, so never swap 1:1.
Do UK and Australian cups give the same result?
No. A US customary cup is 236.6 ml, a metric cup used in Australia and New Zealand is 250 ml, and an old UK imperial cup is 284 ml. Our default is the US cup, but you can pick metric cups in the converter.