1 US cup of cornstarch weighs 112 g = 3.95 oz, so 1 oz = 0.253 cups. Weight ounces are not fluid ounces: 8 fl oz always fills a cup, but 8 oz of cornstarch is 2.02 cups.
| Ounces (weight) | Grams | US cups | Tablespoons |
|---|---|---|---|
| 1 | 28 | 0.25 | 4 |
| 2 | 57 | 0.51 | 8.1 |
| 3 | 85 | 0.76 | 12.1 |
| 4 | 113 | 1.01 | 16.2 |
| 5 | 142 | 1.27 | 20.2 |
| 6 | 170 | 1.52 | 24.3 |
| 8 | 227 | 2.02 | 32.4 |
| 10 | 283 | 2.53 | 40.5 |
| 12 | 340 | 3.04 | 48.6 |
| 16 | 454 | 4.05 | 64.8 |
| 24 | 680 | 6.07 | 97.2 |
| 32 | 907 | 8.1 | 129.6 |
| US cups | Ounces | Grams |
|---|---|---|
| 1/8 | 0.49 | 14 |
| 1/4 | 0.99 | 28 |
| 1/3 | 1.32 | 37 |
| 1/2 | 1.98 | 56 |
| 2/3 | 2.63 | 75 |
| 3/4 | 2.96 | 84 |
| 1 | 3.95 | 112 |
| 1 1/2 | 5.93 | 168 |
| 2 | 7.9 | 224 |
| 3 | 11.85 | 336 |
| 4 | 15.8 | 448 |
See also cornstarch cups to grams.