How Much Is 640 Grams of Cornstarch in Teaspoons?
640 grams of cornstarch equals 240.00 tsp. Cornstarch has a density of 128g per cup. Because grams measure weight and teaspoons measure volume, the result depends on the ingredient's density.
Formula and Step-by-Step
- Start with 640 grams of cornstarch
- 1 cup of cornstarch = 128g
- 640g ÷ 128g/cup = 5 cups × 48 = 240.00 teaspoons
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 grams measurements. Your amount (640 grams) is highlighted.
Other Amounts of Cornstarch
| Grams | US Teaspoons | Metric Teaspoon | Imperial Teaspoon |
|---|---|---|---|
| 5 grams | 1.88 tsp | 1.85 tsp | 1.56 tsp |
| 10 grams | 3.75 tsp | 3.70 tsp | 3.12 tsp |
| 25 grams | 9.38 tsp | 9.24 tsp | 7.81 tsp |
| 50 grams | 18.75 tsp | 18.48 tsp | 15.61 tsp |
| 75 grams | 28.13 tsp | 27.73 tsp | 23.42 tsp |
| 100 grams | 37.50 tsp | 36.97 tsp | 31.23 tsp |
| 150 grams | 56.25 tsp | 55.45 tsp | 46.84 tsp |
| 200 grams | 75.00 tsp | 73.94 tsp | 62.46 tsp |
| 250 grams | 93.75 tsp | 92.42 tsp | 78.07 tsp |
| 500 grams | 187.50 tsp | 184.84 tsp | 156.14 tsp |
| 640 grams | 240.00 tsp | 236.59 tsp | 199.86 tsp |
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 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.