Batch Scaling Around ⅓ US Cup Cornstarch
| Batch Scale | Weight (g / oz) | US Cups & Spoons | Metric (mL) |
|---|---|---|---|
| Half Batch (0.5×) | 21.3g (0.75 oz) | 2 tbsp + 2 tsp | 39.4 mL |
| Standard (1×) | 42.7g (1.51 oz) | ⅓ cup | 78.9 mL |
| 1.5× Batch | 64g (2.26 oz) | ½ cup | 118.3 mL |
| Double Batch (2×) | 85.3g (3.01 oz) | ⅔ cup | 157.7 mL |
| Triple Batch (3×) | 128g (4.52 oz) | 1 cup | 236.6 mL |
Measuring ⅓ US Cup of Cornstarch in the Kitchen
Measured spooned & leveled at a verified bulk density of 128g per US cup, ⅓ US cup of cornstarch weighs 42.7 grams (1.51 ounces). Measured using the dip scooped method (145g/cup), that same ⅓ cup holds 48.3g — a 5.7g difference in your mixing bowl.
Cornstarch packs easily into a solid cake when pressed; scoop gently with a spoon and sweep level with a straightedge.
Source note: USDA FDC #169698 & Argo technical specifications
Frequently Asked Questions
How many grams is ⅓ cup of cornstarch? ▾
⅓ US Cup of cornstarch measured spooned & leveled weighs 42.7 grams (1.51 ounces).
Why must cornstarch be dissolved in cold liquid first? ▾
Adding dry cornstarch directly to hot liquid gelatinizes the surface instantly, causing stubborn lumps.
Is cornstarch in the UK called cornflour? ▾
Yes, British recipes calling for cornflour mean pure white refined cornstarch (128g/cup), not yellow cornmeal.