Baking powder — Teaspoons to Grams
One teaspoon of baking powder weighs about 4 grams, and one tablespoon is about 12 grams. Baking powder is measured by the teaspoon — one level teaspoon is about 4 grams. Use the converter below to switch baking powder between teaspoons, tablespoons, grams, ounces and more.
Baking powder conversion chart
| Amount | Grams | Ounces |
|---|---|---|
| ⅛ tsp | 0.5 g | 0.018 oz |
| ¼ tsp | 1 g | 0.035 oz |
| ½ tsp | 2 g | 0.071 oz |
| ¾ tsp | 3 g | 0.106 oz |
| 1 tsp | 4 g | 0.141 oz |
| 1 tbsp | 12 g | 0.423 oz |
| 2 tbsp | 24 g | 0.847 oz |
| ¼ cup | 48 g | 1.69 oz |
How to measure baking powder
Baking powder is measured by the teaspoon — one level teaspoon is about 4 grams.
Because a cup measures volume rather than weight, the most reliable way to measure baking powder is with a digital kitchen scale. If you are working from cups, keep your technique consistent every time so your results are repeatable. For more, see our guide on baking by weight versus volume.
No scale yet? You don't need a fancy one; any digital kitchen scale that reads in 1-gram steps does everything on this site. Well-rated kitchen scales on Amazon →
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Substitutes for baking powder
- 1 tsp baking powder = ¼ tsp baking soda + ½ tsp cream of tartar + ¼ tsp cornstarch (King Arthur Baking)Mix and use immediately — homemade baking powder loses potency within minutes. The cornstarch prevents clumping; skip it if you don't have any.
See all baking powder substitutes, ratios and sources →
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Baking powder conversions: FAQ
Why doesn't a teaspoon of baking powder weigh the same as a teaspoon of water?
Common baking powder conversions
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* Conversion figures are typical average weights for one US customary cup (236.6 ml), based on the King Arthur Baking Ingredient Weight Chart and cross-referenced with the U.S. Department of Agriculture FoodData Central database. Actual weight varies with packing, brand and humidity — see our methodology.