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How Much Is 0.64 Cups of Cornstarch in Grams?

0.64 cups of cornstarch weighs 81.92 g. This is based on cornstarch having a density of 128g per cup. Because cups measure volume and grams measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 0.64 cups.

0.64 cups of cornstarch
=
81.92g
Result using all cup standards info
81.92 g (US) 86.56 g (Metric Cup) 98.38 g (Imperial Cup)
0.64 cups of cornstarch is also
81.92

Formula and Step-by-Step

cups × 128g/cup = grams
  1. Start with 0.64 cups of cornstarch
  2. 1 cup of cornstarch = 128g
  3. 0.64 × 128 = 81.92g

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

Measuring Tip

For the most consistent results, weigh cornstarch on a kitchen scale. Volume measurements can vary by 20-30% depending on how the flour is scooped.

Cornstarch at Different Amounts

How cornstarch scales across common cups measurements. Your amount (0.64 cups) is highlighted.

0.25 cups32 g0.33 cups42.24 g0.5 cups64 g0.64 cups81.92 g0.75 cups96 g1 cup128 g1.5 cups192 g2 cups256 g

For reference, 0.64 cups of cornstarch (81.92g) is close in weight to a deck of playing cards (94g).

Other Amounts of Cornstarch

Cups US Grams Metric Cup Imperial Cup
0.25 cups 32.00 g 33.81 g 38.43 g
0.33 cups 42.24 g 44.63 g 50.73 g
0.5 cups 64.00 g 67.63 g 76.86 g
0.64 cups 81.92 g 86.56 g 98.38 g
0.75 cups 96.00 g 101.44 g 115.29 g
1 cup 128.00 g 135.26 g 153.72 g
1.5 cups 192.00 g 202.88 g 230.58 g
2 cups 256.00 g 270.51 g 307.44 g
3 cups 384.00 g 405.77 g 461.17 g
4 cups 512.00 g 541.02 g 614.89 g
5 cups 640.00 g 676.28 g 768.61 g

Understanding the Units

What is a Cup?

The US cup (236.588 ml) is slightly smaller than the metric cup used in Australia and some other countries (250 ml). When following recipes from different countries, check which cup standard is being used.

What is a Gram?

Weighing ingredients in grams eliminates the variability of volume measurements. A cup of flour can weigh anywhere from 120g to 160g depending on how it was scooped, but 120g of flour is always 120g of flour.

Frequently Asked Questions

About 81.92 g, 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). For 0.64 cups: 0.64 × 128 = 81.92 g.
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: 81.92 g ÷ 128 = 0.64 cups. Or use the Grams to Cups converter.