1 US cup of baking soda (bicarbonate of soda, meetha soda) weighs 221 g when spooned into the cup and levelled. Below are the cups, spoons and grams-to-cups charts.
| US cups | Grams | Ounces |
|---|---|---|
| ⅛ cup | 28 g | 0.97 oz |
| ¼ cup | 55 g | 1.95 oz |
| ⅓ cup | 74 g | 2.6 oz |
| ½ cup | 111 g | 3.9 oz |
| ⅔ cup | 147 g | 5.2 oz |
| ¾ cup | 166 g | 5.8 oz |
| 1 cup | 221 g | 7.8 oz |
| 1 ½ cups | 332 g | 11.7 oz |
| 2 cups | 442 g | 15.6 oz |
| 3 cups | 663 g | 23.4 oz |
| 4 cups | 884 g | 31.2 oz |
| Spoons (level) | Grams |
|---|---|
| ¼ teaspoon | 1.2 g |
| ½ teaspoon | 2.3 g |
| 1 teaspoon | 4.6 g |
| 1 tablespoon | 14 g |
| 2 tablespoons | 28 g |
| 3 tablespoons | 41 g |
| 4 tablespoons (¼ cup) | 55 g |
| Grams | US cups | Tablespoons |
|---|---|---|
| 10 g | 0.05 cups | 0.7 tbsp |
| 25 g | 0.11 cups | 1.8 tbsp |
| 50 g | 0.23 cups | 3.6 tbsp |
| 100 g | 0.45 cups | 7.2 tbsp |
| 125 g | 0.57 cups | 9 tbsp |
| 150 g | 0.68 cups | 10.9 tbsp |
| 200 g | 0.9 cups | 14.5 tbsp |
| 250 g | 1.13 cups | 18.1 tbsp |
| 300 g | 1.36 cups | 21.7 tbsp |
| 500 g | 2.26 cups | 36.2 tbsp |
| 1,000 g | 4.52 cups | 72.4 tbsp |
| Measure | Grams |
|---|---|
| 1 metric cup (250 ml) | 234 g |
| ½ metric cup | 117 g |
| 1 UK/metric tablespoon (15 ml) | 14 g |
| 1 Australian tablespoon (20 ml) | 19 g |
| 100 ml | 93 g |
A metric cup (250 ml, used in Australia, New Zealand, Canada and many Indian recipes) holds about 6% more than a US cup.
Small amounts are measured with level measuring spoons; for spices a tiny weighing error matters little, but for salt and leaveners use level spoons.
Baking soda is about four times as strong as baking powder, so measure it carefully.
Also called: bicarbonate of soda, meetha soda.
Weights are for a level US cup (236.6 ml) and level spoons, from USDA FoodData Central household measures. Brands and packing vary by a few per cent; when a recipe gives grams, weigh rather than measure.
1 level US cup of baking soda weighs about 221 g (7.8 oz). A 250 ml metric cup weighs about 234 g.
1 level tablespoon of baking soda is about 14 g, and 1 teaspoon is about 4.6 g.
100 g of baking soda is about 0.45 cups, or 7.2 tablespoons.
A cup measures volume, not weight. Baking Soda is slightly lighter than water, so a cup weighs a little less (221 g vs 237 g).