Cornstarch Teaspoons to Ounces
Convert any amount of cornstarch between teaspoons and ounces. 1 teaspoon of cornstarch equals 0.09 oz. Use the calculator for custom amounts, or choose an amount below.
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Common cornstarch measurements found in recipes.
Other Units for Cornstarch
Convert cornstarch from teaspoons to other units. Each link has its own calculator and conversion amounts.
Similar Ingredients
Measuring Tip
Cornstarch is a fine powder that compacts easily. Spoon it into the measuring spoon and level off rather than dipping, which packs in more than intended.
Understanding the Units
What is a Teaspoon?
A US teaspoon is 4.929 ml, a metric teaspoon is exactly 5 ml, and an imperial teaspoon is 5.919 ml. The metric and US versions are nearly identical (1.4% difference), but the imperial teaspoon is 20% larger. For most spices the difference is negligible, but for leaveners like baking powder it can affect the result.
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.
Frequently Asked Questions
1 teaspoon of cornstarch is 0.09 oz. This conversion uses the ingredient's density and scales proportionally - pick an amount or try the calculator.
The most accurate way is to weigh cornstarch on a kitchen scale. If you are measuring by volume, sift or whisk the flour first to break up clumps, then spoon it into the measuring spoon and level it off. Do not scoop directly from the bag, which compacts the flour and can increase the weight by 20-30%.
Close, but not exactly. The teaspoons to ounces conversion for cornstarch may vary slightly between brands depending on moisture content and how the ingredient is measured.
Weighing is more consistent than volume measuring. A teaspoon of cornstarch can vary by 10-20% depending on how it's scooped, packed, or leveled. Weighing gives the same result every time, which is especially important in baking where precision affects texture and rise.