How Much Is 12 Teaspoons of Cornstarch in Ounces?

Q: How many ounces is 12 teaspoons of cornstarch?

12 teaspoons of cornstarch converts to approximately 1.13 oz.

12 teaspoons of cornstarch equals 1.13 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, 12 teaspoons of honey would be 3.00 oz.

12 teaspoons of cornstarch

1.13oz

Result using all teaspoon standards info

1.13 oz (US) 1.15 oz (Metric Teaspoon) 1.36 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: 12 teaspoons all-purpose flour = 1.10 oz 12 teaspoons almond flour = 0.85 oz 12 teaspoons bread flour = 1.12 oz

Convert a different ingredient

12 teaspoons of cornstarch is also

32 g (grams)

Teaspoons of Cornstarch info

Ounces

1.13

Formula and Step-by-Step

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

Start with 12 teaspoons of cornstarch
1 teaspoon of cornstarch = 2.67g
12 × 2.67 = 32g
Convert grams to ounces: 32 ÷ 28.3495 = 1.13 oz

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 teaspoons measurements. Your amount (12 teaspoons) is highlighted.

For reference, 12 teaspoons of cornstarch (32g) is close in weight to a slice of bread (30g).

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
12 teaspoons	1.13 oz	1.15 oz	1.36 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?

An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.

Frequently Asked Questions

How many ounces is 12 teaspoons of cornstarch? expand_more

About 1.13 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 12 teaspoons: 12 × 2.67 = 32g, then 32 ÷ 28.3495 = 1.13 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.