How Much Is 1 Ounce of Cream of Tartar in Tablespoons?
1 ounce of cream of tartar equals 3.15 tbsp. Cream of tartar has a density of 144g per cup. A lighter ingredient like cocoa powder (86g/cup) would fill even more volume at the same weight, which is why ingredient-specific conversions matter.
Formula and Step-by-Step
- Start with 1 ounce of cream of tartar
- Convert ounces to grams: 1 × 28.35 = 28.35g
- 1 cup of cream of tartar = 144g
- 28.35g ÷ 144g/cup = 0.20 cups × 16 = 3.15 tablespoons
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Baking powder loses potency over time. If yours is more than 6 months old, test it: drop a teaspoon into hot water. If it bubbles vigorously, it is still active.
Cream of Tartar at Different Amounts
How cream of tartar scales across common ounces measurements. Your amount (1 ounce) is highlighted.
Other Amounts of Cream of Tartar
| Ounces | US Tablespoons | Metric Tablespoon | Australian Tablespoon |
|---|---|---|---|
| 1 ounce | 3.15 tbsp | 3.11 tbsp | 2.33 tbsp |
| 2 ounces | 6.30 tbsp | 6.21 tbsp | 4.66 tbsp |
| 3 ounces | 9.45 tbsp | 9.32 tbsp | 6.99 tbsp |
| 4 ounces | 12.60 tbsp | 12.42 tbsp | 9.32 tbsp |
| 5 ounces | 15.75 tbsp | 15.53 tbsp | 11.64 tbsp |
| 6 ounces | 18.90 tbsp | 18.63 tbsp | 13.97 tbsp |
| 8 ounces | 25.20 tbsp | 24.84 tbsp | 18.63 tbsp |
| 10 ounces | 31.50 tbsp | 31.05 tbsp | 23.29 tbsp |
| 12 ounces | 37.80 tbsp | 37.26 tbsp | 27.95 tbsp |
| 16 ounces | 50.40 tbsp | 49.68 tbsp | 37.26 tbsp |
Understanding the Units
What is an Ounce?
Weight ounces and fluid ounces are different measurements. A fluid ounce measures volume (29.574 ml), while an ounce measures weight (28.35g). They only align for water, where 1 fl oz weighs approximately 1 oz.
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.