How many grams in a teaspoon of baking soda?
1 teaspoon of baking soda weighs 4.6 g.1 tablespoon: 14 g
Weights are for baking soda (powder), in US customary teaspoons.
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= 4.6 g
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Teaspoons to grams
| Teaspoons | Grams |
|---|---|
| ⅛ tsp | 0.6 g |
| ¼ tsp | 1.2 g |
| ½ tsp | 2.3 g |
| ¾ tsp | 3.5 g |
| 1 tsp | 4.6 g |
| 1 ½ tsp | 6.9 g |
| 2 tsp | 9.2 g |
| 3 tsp | 14 g |
Grams to teaspoons
| Grams | US measure |
|---|---|
| 1 g | ≈ ¼ tsp |
| 2 g | ≈ ⅜ tsp |
| 3 g | ≈ ⅝ tsp |
| 5 g | ≈ 1 ⅛ tsp |
| 10 g | ≈ 2 ⅛ tsp |
| 15 g | ≈ 1 tbsp + ½ tsp |
Rounded to amounts you can measure; ≈ marks a rounded answer.
Measuring baking soda
These weights are for baking soda (powder). A different form, or a cup filled another way, weighs differently, so weigh it if the recipe gives grams.
The King Arthur Baking ingredient weight chart gives 288 g per cup. Small spoon measures vary; weigh if the recipe is sensitive. We use the USDA figure throughout.
Source
USDA FoodData Central, food 175040: “Leavening agents, baking soda”, 1 tsp = 4.6 g (USDA FoodData Central SR Legacy, April 2018). Other amounts are calculated with 1 cup = 16 tablespoons = 48 teaspoons. Data version 2026-10-17.1, reviewed 16 October 2026.
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