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How Much Is 0.33 Cups of Cornstarch in Ounces?

0.33 cups of cornstarch equals 1.49 oz. Cornstarch has a density of 128g per cup (128g per cup), which means it's relatively light compared to other common cooking ingredients. For comparison, 0.33 cups of honey would be 3.96 oz.

0.33 cups of cornstarch
=
1.49oz
Result using all cup standards info
1.49 oz (US) 1.57 oz (Metric Cup) 1.79 oz (Imperial Cup)
0.33 cups of cornstarch is also
1.49

Formula and Step-by-Step

cups × 128g/cup ÷ 28.3495g/oz = ounces
  1. Start with 0.33 cups of cornstarch
  2. 1 cup of cornstarch = 128g
  3. 0.33 × 128 = 42.24g
  4. Convert grams to ounces: 42.24 ÷ 28.3495 = 1.49 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 cups measurements. Your amount (0.33 cups) is highlighted.

0.25 cups1.13 oz0.33 cups1.49 oz0.5 cups2.26 oz0.75 cups3.39 oz1 cup4.52 oz1.5 cups6.77 oz2 cups9.03 oz3 cups13.55 oz

For reference, 0.33 cups of cornstarch (42.24g) is close in weight to a golf ball (46g).

Other Amounts of Cornstarch

Cups US Ounces Metric Cup Imperial Cup
0.25 cups 1.13 oz 1.19 oz 1.36 oz
0.33 cups 1.49 oz 1.57 oz 1.79 oz
0.5 cups 2.26 oz 2.39 oz 2.71 oz
0.75 cups 3.39 oz 3.58 oz 4.07 oz
1 cup 4.52 oz 4.77 oz 5.42 oz
1.5 cups 6.77 oz 7.16 oz 8.13 oz
2 cups 9.03 oz 9.54 oz 10.84 oz
3 cups 13.55 oz 14.31 oz 16.27 oz
4 cups 18.06 oz 19.08 oz 21.69 oz
5 cups 22.58 oz 23.86 oz 27.11 oz

Understanding the Units

What is a Cup?

A cup is a US customary unit of volume equal to 236.588 milliliters or 8 fluid ounces. It is the most common volume measurement in American recipes. One cup can be divided into 16 tablespoons or 48 teaspoons.

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 1.49 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 cups by 128 (grams per cup for cornstarch), then divide by 28.3495 to convert grams to ounces. For 0.33 cups: 0.33 × 128 = 42.24g, then 42.24 ÷ 28.3495 = 1.49 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 cup and level off. Do not scoop directly from the bag.
Yes, quite a bit. If you spoon the flour into your measuring cup 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.
Reverse the conversion: 1.49 oz × 28.3495 = 42.24g, then 42.24g ÷ 128 = 0.33 cups. Or use the Ounces to Cups converter.