How Much Is 0.25 Teaspoons of Cornstarch in Ounces?

0.25 teaspoons of cornstarch equals 0.02 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, 0.25 teaspoons of honey would be 0.06 oz.

0.25 teaspoons of cornstarch
=
0.02oz
Result using all teaspoon standards info
0.02 oz (US) 0.02 oz (Metric Teaspoon) 0.03 oz (Imperial Teaspoon)
0.25 teaspoons of cornstarch is also
0.02

Formula and Step-by-Step

teaspoons × 2.67g/tsp ÷ 28.3495g/oz = ounces
  1. Start with 0.25 teaspoons of cornstarch
  2. 1 teaspoon of cornstarch = 2.67g
  3. 0.25 × 2.67 = 0.67g
  4. Convert grams to ounces: 0.67 ÷ 28.3495 = 0.02 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 (0.25 teaspoons) is highlighted.

0.25 tsp0.02 oz0.5 tsp0.05 oz1 tsp0.09 oz1.5 tsp0.14 oz2 tsp0.19 oz3 tsp0.28 oz4 tsp0.38 oz5 tsp0.47 oz

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?

In baking, teaspoon measurements are critical for ingredients where precision changes the outcome. Too much baking soda (1 tsp = 6g) creates a metallic taste, while too little means flat results.

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.

Frequently Asked Questions

About 0.02 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.
Multiply the number of teaspoons by 2.67 (grams per teaspoon for cornstarch), then divide by 28.3495 to convert grams to ounces. For 0.25 teaspoons: 0.25 × 2.67 = 0.67g, then 0.67 ÷ 28.3495 = 0.02 oz.
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.
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.