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How Much Is 0.21 Pounds of Cornstarch in Cups?

Converting 0.21 pounds of cornstarch to cups gives 0.74 cups. First convert to grams (0.21 lb = 95.25g), then divide by the density of cornstarch (128g per cup). Each ingredient fills a different volume at the same weight.

0.21 pounds of cornstarch
=
0.74cups
Result using all cup standards info
0.74 cups (US) 0.70 cups (Metric Cup) 0.62 cups (Imperial Cup)
0.74

Formula and Step-by-Step

(pounds × 453.59g/lb) ÷ 128g/cup = cups
  1. Start with 0.21 pounds of cornstarch
  2. Convert pounds to grams: 0.21 × 453.59 = 95.25g
  3. 1 cup of cornstarch = 128g
  4. 95.25g ÷ 128g/cup = 0.74 cups

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 pounds measurements. Your amount (0.21 pounds) is highlighted.

0.21 lb0.74 cups0.25 lb0.89 cups0.5 lb1.77 cups0.75 lb2.66 cups1 lb3.54 cups1.5 lb5.32 cups2 lb7.09 cups3 lb10.63 cups

Other Amounts of Cornstarch

Pounds US Cups Metric Cup Imperial Cup
0.21 pounds 0.74 cups 0.70 cups 0.62 cups
0.25 pounds 0.89 cups 0.84 cups 0.74 cups
0.5 pounds 1.77 cups 1.68 cups 1.48 cups
0.75 pounds 2.66 cups 2.52 cups 2.21 cups
1 pound 3.54 cups 3.35 cups 2.95 cups
1.5 pounds 5.32 cups 5.03 cups 4.43 cups
2 pounds 7.09 cups 6.71 cups 5.90 cups
3 pounds 10.63 cups 10.06 cups 8.85 cups
4 pounds 14.17 cups 13.41 cups 11.80 cups
5 pounds 17.72 cups 16.77 cups 14.75 cups
10 pounds 35.44 cups 33.54 cups 29.51 cups

Understanding the Units

What is a Pound?

A pound (lb) is a US customary unit of weight equal to 453.592 grams or 16 ounces. It is used for larger quantities of ingredients like flour, sugar, and meat.

What is a Cup?

In US cooking, a cup measures volume, not weight. One standard US cup holds 236.588 ml of liquid. Because different ingredients have different densities, a cup of one ingredient can weigh very differently from a cup of another.

Frequently Asked Questions

About 0.74 cups, based on cornstarch having a density of 128g per cup. The exact amount depends on how the ingredient is measured and the specific product.
First convert pounds to grams (1 pound = 453.592g), then divide by 128 (grams per cup). For 0.21 pounds: 0.21 × 453.592 = 95.25g, then 95.25 ÷ 128 = 0.74 cups.
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: 0.74 cups × 128g/cup = 95.25g, then 95.25g ÷ 453.592 = 0.21 pounds. Or use the Cups to Pounds converter.