Batch Scaling Around 300g Cornstarch
| Batch Scale | Weight (g / oz) | US Cups & Spoons | Metric (mL) |
|---|---|---|---|
| Half Batch (0.5×) | 150g (5.29 oz) | 1 cup + 2 tbsp + 2 ¼ tsp | 277.3 mL |
| Standard (1×) | 300g (10.58 oz) | 2 ⅓ cups | 554.5 mL |
| 1.5× Batch | 450g (15.87 oz) | 3 ½ cups | 831.8 mL |
| Double Batch (2×) | 600g (21.16 oz) | 4 ⅔ cups + 1 tsp | 1109 mL |
| Triple Batch (3×) | 900g (31.75 oz) | 7 cups + 1 ½ tsp | 1663.5 mL |
Measuring 300g of Cornstarch in the Kitchen
Because 1 US Customary Cup (236.6 mL) of cornstarch weighs 128g when measured spooned & leveled, 300 Grams (300g) translates to 2.34 US cups (2 ⅓ cups). By contrast, using the dip scooped measure (145g/cup — a 17g per-cup shift), 300g occupies 2 cups + 1 tbsp + ¼ tsp (2.07 cups).
Without a kitchen scale, measure 2 ⅓ cups (37.5 tablespoons total) using spooned & leveled technique. 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 cups is 300 grams of cornstarch? ▾
300 grams of cornstarch (spooned & leveled, 128g per US cup) equals 2 ⅓ cups (2.34 US Customary Cups, 2.22 Metric 250 mL cups, or 37.5 tablespoons).
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.