How Much Is 8 Ounces of Cornstarch in Tablespoons?
8 ounces of cornstarch equals 28.35 tbsp. Cornstarch has a density of 128g 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 8 ounces of cornstarch
- Convert ounces to grams: 8 × 28.35 = 226.80g
- 1 cup of cornstarch = 128g
- 226.80g ÷ 128g/cup = 1.77 cups × 16 = 28.35 tablespoons
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Different flour types have very different weights per cup. Always check the specific flour your recipe calls for rather than using a generic "flour" conversion.
Cornstarch at Different Amounts
How cornstarch scales across common ounces measurements. Your amount (8 ounces) is highlighted.
Other Amounts of Cornstarch
| Ounces | US Tablespoons | Metric Tablespoon | Australian Tablespoon |
|---|---|---|---|
| 1 ounce | 3.54 tbsp | 3.49 tbsp | 2.62 tbsp |
| 2 ounces | 7.09 tbsp | 6.99 tbsp | 5.24 tbsp |
| 3 ounces | 10.63 tbsp | 10.48 tbsp | 7.86 tbsp |
| 4 ounces | 14.17 tbsp | 13.97 tbsp | 10.48 tbsp |
| 5 ounces | 17.72 tbsp | 17.47 tbsp | 13.10 tbsp |
| 6 ounces | 21.26 tbsp | 20.96 tbsp | 15.72 tbsp |
| 8 ounces | 28.35 tbsp | 27.95 tbsp | 20.96 tbsp |
| 10 ounces | 35.44 tbsp | 34.93 tbsp | 26.20 tbsp |
| 12 ounces | 42.52 tbsp | 41.92 tbsp | 31.44 tbsp |
| 16 ounces | 56.70 tbsp | 55.89 tbsp | 41.92 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.