How Much Is 680.96 Grams of Cornstarch in Cups?
680.96 grams of cornstarch equals 5.32 cups. Cornstarch has a density of 128g per cup. Because grams measure weight and cups measure volume, the result depends on the ingredient's density.
Formula and Step-by-Step
- Start with 680.96 grams of cornstarch
- 1 cup of cornstarch = 128g
- 680.96g ÷ 128g/cup = 5.32 cups
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Humidity affects cornstarch weight. In humid conditions, flour absorbs moisture and weighs more per cup. Store it in an airtight container for consistent results.
Cornstarch at Different Amounts
How cornstarch scales across common grams measurements. Your amount (680.96 grams) is highlighted.
Other Amounts of Cornstarch
| Grams | US Cups | Metric Cup | Imperial Cup |
|---|---|---|---|
| 5 grams | 0.04 cups | 0.04 cups | 0.03 cups |
| 10 grams | 0.08 cups | 0.07 cups | 0.07 cups |
| 25 grams | 0.20 cups | 0.18 cups | 0.16 cups |
| 50 grams | 0.39 cups | 0.37 cups | 0.33 cups |
| 75 grams | 0.59 cups | 0.55 cups | 0.49 cups |
| 100 grams | 0.78 cups | 0.74 cups | 0.65 cups |
| 150 grams | 1.17 cups | 1.11 cups | 0.98 cups |
| 200 grams | 1.56 cups | 1.48 cups | 1.30 cups |
| 250 grams | 1.95 cups | 1.85 cups | 1.63 cups |
| 500 grams | 3.91 cups | 3.70 cups | 3.25 cups |
| 680.96 grams | 5.32 cups | 5.03 cups | 4.43 cups |
Understanding the Units
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.
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.