How Much Is 21.3 Tablespoons of Cornstarch in Grams?
21.3 tablespoons of cornstarch equals 170.40 g. Cornstarch has a density of 128g per cup (8g per tablespoon), which means it's relatively light compared to other common cooking ingredients. For comparison, 21.3 tablespoons of honey would be 452.63 g.
Formula and Step-by-Step
- Start with 21.3 tablespoons of cornstarch
- 1 tablespoon of cornstarch = 8g
- 21.3 × 8 = 170.4g
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 tablespoons measurements. Your amount (21.3 tablespoons) is highlighted.
For reference, 21.3 tablespoons of cornstarch (170.4g) is close in weight to a smartphone (175g).
Other Amounts of Cornstarch
| Tablespoons | US Grams | Metric Tablespoon | Australian Tablespoon |
|---|---|---|---|
| 1 tablespoon | 8.00 g | 8.12 g | 10.82 g |
| 2 tablespoons | 16.00 g | 16.23 g | 21.64 g |
| 3 tablespoons | 24.00 g | 24.35 g | 32.46 g |
| 4 tablespoons | 32.00 g | 32.46 g | 43.28 g |
| 5 tablespoons | 40.00 g | 40.58 g | 54.10 g |
| 6 tablespoons | 48.00 g | 48.69 g | 64.92 g |
| 8 tablespoons | 64.00 g | 64.92 g | 86.56 g |
| 10 tablespoons | 80.00 g | 81.15 g | 108.20 g |
| 12 tablespoons | 96.00 g | 97.38 g | 129.84 g |
| 16 tablespoons | 128.00 g | 129.84 g | 173.13 g |
| 21.3 tablespoons | 170.40 g | 172.85 g | 230.47 g |
Understanding the Units
What is a Tablespoon?
A tablespoon is roughly the volume of a large soup spoon. In precise terms, 1 US tablespoon equals 14.787 ml, which is very close to the 15 ml metric standard used in most of the world. Three teaspoons make one tablespoon.
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.