How Much Is 18.9 Tablespoons of Cream of Tartar in Ounces?
18.9 tablespoons of cream of tartar weighs 6.00 oz. This is based on cream of tartar having a density of 144g per cup. Because tablespoons measure volume and ounces measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 18.9 tablespoons.
Formula and Step-by-Step
- Start with 18.9 tablespoons of cream of tartar
- 1 tablespoon of cream of tartar = 9g
- 18.9 × 9 = 170.1g
- Convert grams to ounces: 170.1 ÷ 28.3495 = 6.00 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Leavener measurements are critical because even small differences affect rise and texture. When possible, weigh cream of tartar rather than relying on volume.
Cream of Tartar at Different Amounts
How cream of tartar scales across common tablespoons measurements. Your amount (18.9 tablespoons) is highlighted.
For reference, 18.9 tablespoons of cream of tartar (170.1g) is close in weight to a smartphone (175g).
Other Amounts of Cream of Tartar
| Tablespoons | US Ounces | Metric Tablespoon | Australian Tablespoon |
|---|---|---|---|
| 1 tablespoon | 0.32 oz | 0.32 oz | 0.43 oz |
| 2 tablespoons | 0.63 oz | 0.64 oz | 0.86 oz |
| 3 tablespoons | 0.95 oz | 0.97 oz | 1.29 oz |
| 4 tablespoons | 1.27 oz | 1.29 oz | 1.72 oz |
| 5 tablespoons | 1.59 oz | 1.61 oz | 2.15 oz |
| 6 tablespoons | 1.90 oz | 1.93 oz | 2.58 oz |
| 8 tablespoons | 2.54 oz | 2.58 oz | 3.44 oz |
| 10 tablespoons | 3.17 oz | 3.22 oz | 4.29 oz |
| 12 tablespoons | 3.81 oz | 3.86 oz | 5.15 oz |
| 16 tablespoons | 5.08 oz | 5.15 oz | 6.87 oz |
| 18.9 tablespoons | 6.00 oz | 6.09 oz | 8.12 oz |
Understanding the Units
What is a Tablespoon?
Tablespoon sizes differ by country. A US tablespoon is 14.787 ml, close to the 15 ml metric standard used in most countries. An Australian tablespoon is 20 ml, about 35% larger than US. An imperial tablespoon is 17.758 ml. If your recipe comes from Australia, the larger tablespoon size can make a real difference.
What is an Ounce?
Ounces are commonly used in US recipes for cheese, meat, chocolate, and other ingredients sold by weight. Many kitchen scales offer both gram and ounce readings.