How Much Is 138 Teaspoons of Baking Powder in Ounces?
Converting 138 teaspoons of baking powder to ounces gives 23.32 oz. One teaspoon of baking powder weighs 4.79g, so 138 teaspoons is 138 × 4.79 = 661.25g (23.32 oz). This conversion is specific to baking powder because each ingredient has a different density.
Formula and Step-by-Step
- Start with 138 teaspoons of baking powder
- 1 teaspoon of baking powder = 4.79g
- 138 × 4.79 = 661.25g
- Convert grams to ounces: 661.25 ÷ 28.3495 = 23.32 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Baking powder can clump or settle during storage. Stir or sift before measuring by volume for consistent results.
Baking Powder at Different Amounts
How baking powder scales across common teaspoons measurements. Your amount (138 teaspoons) is highlighted.
For reference, 138 teaspoons of baking powder (661.25g) is close in weight to a basketball (624g).
Other Amounts of Baking Powder
| Teaspoons | US Ounces | Metric Teaspoon | Imperial Teaspoon |
|---|---|---|---|
| 0.25 teaspoons | 0.04 oz | 0.04 oz | 0.05 oz |
| 0.5 teaspoons | 0.08 oz | 0.09 oz | 0.10 oz |
| 1 teaspoon | 0.17 oz | 0.17 oz | 0.20 oz |
| 1.5 teaspoons | 0.25 oz | 0.26 oz | 0.30 oz |
| 2 teaspoons | 0.34 oz | 0.34 oz | 0.41 oz |
| 3 teaspoons | 0.51 oz | 0.51 oz | 0.61 oz |
| 4 teaspoons | 0.68 oz | 0.69 oz | 0.81 oz |
| 5 teaspoons | 0.85 oz | 0.86 oz | 1.01 oz |
| 6 teaspoons | 1.01 oz | 1.03 oz | 1.22 oz |
| 8 teaspoons | 1.35 oz | 1.37 oz | 1.62 oz |
| 138 teaspoons | 23.32 oz | 23.66 oz | 28.01 oz |
Understanding the Units
What is a Teaspoon?
A teaspoon (tsp) is a US customary unit of volume equal to 4.929 milliliters or 1/3 of a tablespoon. It is the standard measure for spices, leaveners, extracts, and other small-quantity ingredients.
What is an Ounce?
An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.