How Much Is 3 Teaspoons of Cornstarch in Ounces?

Q: How many ounces is 3 teaspoons of cornstarch?

3 teaspoons of cornstarch converts to approximately 0.28 oz.

3 teaspoons of cornstarch equals 0.28 oz. Cornstarch has a density of 128g per cup (2.67g per teaspoon), which means it's relatively light compared to other common cooking ingredients. For comparison, 3 teaspoons of honey would be 0.75 oz.

3 teaspoons of cornstarch

0.28oz

Result using all teaspoon standards info

0.28 oz (US) 0.29 oz (Metric Teaspoon) 0.34 oz (Imperial Teaspoon)

Try: 0.25 teaspoons = 0.02 oz 0.5 teaspoons = 0.05 oz 1 teaspoon = 0.09 oz 1.5 teaspoons = 0.14 oz

Compare: 3 teaspoons all-purpose flour = 0.28 oz 3 teaspoons almond flour = 0.21 oz 3 teaspoons bread flour = 0.28 oz

Convert a different ingredient

3 teaspoons of cornstarch is also

8 g (grams)

Teaspoons of Cornstarch info

Ounces

0.28

Formula and Step-by-Step

teaspoons × 2.67g/tsp ÷ 28.3495g/oz = ounces

Start with 3 teaspoons of cornstarch
1 teaspoon of cornstarch = 2.67g
3 × 2.67 = 8g
Convert grams to ounces: 8 ÷ 28.3495 = 0.28 oz

The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.

Measuring Tip

Humidity affects cornstarch weight. In humid conditions, flour absorbs moisture and weighs more per cup. Store it in an airtight container for consistent results.

Cornstarch at Different Amounts

How cornstarch scales across common teaspoons measurements. Your amount (3 teaspoons) is highlighted.

Other Amounts of Cornstarch

Teaspoons	US Ounces	Metric Teaspoon	Imperial Teaspoon
0.25 teaspoons	0.02 oz	0.02 oz	0.03 oz
0.5 teaspoons	0.05 oz	0.05 oz	0.06 oz
1 teaspoon	0.09 oz	0.10 oz	0.11 oz
1.5 teaspoons	0.14 oz	0.14 oz	0.17 oz
2 teaspoons	0.19 oz	0.19 oz	0.23 oz
3 teaspoons	0.28 oz	0.29 oz	0.34 oz
4 teaspoons	0.38 oz	0.38 oz	0.45 oz
5 teaspoons	0.47 oz	0.48 oz	0.56 oz
6 teaspoons	0.56 oz	0.57 oz	0.68 oz
8 teaspoons	0.75 oz	0.76 oz	0.90 oz

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

How many ounces is 3 teaspoons of cornstarch? expand_more

About 0.28 oz, based on cornstarch having a density of 128g per cup. The exact amount depends on how the ingredient is measured and the specific product.

What is the formula for converting teaspoons of cornstarch to ounces? expand_more

Multiply the number of teaspoons by 2.67 (grams per teaspoon for cornstarch), then divide by 28.3495 to convert grams to ounces. For 3 teaspoons: 3 × 2.67 = 8g, then 8 ÷ 28.3495 = 0.28 oz.

How do I measure cornstarch accurately? expand_more

For the most accurate results, weigh cornstarch on a kitchen scale. If measuring by volume, sift or whisk first to break up clumps, then spoon into the measuring spoon and level off. Do not scoop directly from the bag.

Does the measurement method affect how much cornstarch weighs per cup? expand_more

Yes, quite a bit. If you spoon the flour into your measuring spoon and level it off, you will get about 128 grams per cup. If you dip directly into the flour bag and sweep level, the flour packs tighter and you can end up with 140.8 to 160 grams per cup instead. This conversion uses the spoon-and-level method, which is the standard most baking references follow.