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Cornstarch — Ounces in Cups
1 ounce of cornstarch equals 0.236 ( ~ 1/4) cups*
Density-based conversion — ingredient densities cross-checked against the FAO/INFOODS density database and USDA FoodData Central. The exact weight varies slightly with brand and packing. How we calculate · Reviewed August 21, 2026.
About cornstarch measurements
Cornstarch is a superfine powder that settles tightly in the box, giving a reference density around 0.51 g/ml (about 120 g per cup). It compacts under its own weight, so digging a cup from a fresh box packs in more than gently spooning it — fluff or sift it first for an honest measure.
Ounces of cornstarch equivalent in cups?
FAQs on cornstarch weight to volume conversion
1 ounce of cornstarch equals how many cups?
1 ounce of cornstarch is equivalent 0.236 ( ~ 1/4) cups.
How much is 0.236 cups of cornstarch in ounces?
0.236 cups of cornstarch equals 1 ounce.
Ounces to Cups of Cornstarch Conversion Chart
Note: Fractions are rounded to common recipe fractions (1/8, 1/4, 1/3, 1/2, 2/3, 3/4…). Values are rounded to 3 significant figures.
| Ounces to cups of Cornstarch | |
|---|---|
| 0.0148 cups | |
| 0.0295 cups | |
| 0.0591 cups | |
| 0.0788 ( ~ 1/8 ) cups | |
| 0.118 ( ~ 1/8 ) cups | |
| 0.158 ( ~ 1/8 ) cups | |
| 0.177 ( ~ 1/8 ) cups | |
| 1 ounce | 0.236 ( ~ 1/4 ) cups |
| 1 | 0.251 ( ~ 1/4 ) cups |
| 1 | 0.266 ( ~ 1/4 ) cups |
| 1 | 0.295 ( ~ 1/3 ) cups |
| 1 | 0.315 ( ~ 1/3 ) cups |
| 1 | 0.355 ( ~ 1/3 ) cups |
| 1 | 0.394 ( ~ 1/3 ) cups |
| 1 | 0.414 ( ~ 1/3 ) cups |
| 2 ounces | 0.473 ( ~ 1/2 ) cups |
| 2 | 0.487 ( ~ 1/2 ) cups |
| 2 | 0.502 ( ~ 1/2 ) cups |
| 2 | 0.532 ( ~ 1/2 ) cups |
| 2 | 0.551 ( ~ 1/2 ) cups |
| 2 | 0.591 ( ~ 2/3 ) cups |
| 3 ounces | 0.709 ( ~ 3/4 ) cups |
| 4 ounces | 0.945 ( ~ 1 ) cups |
| 5 ounces | 1.18 ( ~ 1 1/8 ) cups |
| 6 ounces | 1.42 ( ~ 1 1/2 ) cups |
| 8 ounces | 1.89 ( ~ 2 ) cups |
| 10 ounces | 2.36 ( ~ 2 1/3 ) cups |
References:
Weight to Volume Conversions - Recipes
A note on cooking ingredients measurements
Notes: results are rounded (by default) to 3 significant figures. Cooking conversions use standard ingredient densities — the exact weight varies slightly with the brand and how tightly the ingredient is packed ☺.