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2 US Cups Cornstarch = 256g

2 US Cups of cornstarch weighs 256 grams (9.03 ounces or 0.56 pounds; 473.2 mL or 32 tablespoons in volume) when measured spooned & leveled at a verified bulk density of 128g per 236.6 mL US Customary cup.

Imperial weight: 9.03 oz (0.56 lb) • Volume: 473.2 mL (32 tbsp)

Batch
Measuring density
Converted Measure
2 US cup Cornstarch (spooned & leveled) =
256 g
Physical scoop breakdown2.00 cups
1 cup
1 cup
Edit either side to reverseCornstarch chart →
Grams
256 g
Ounces
9.03 oz
US Cups
2 cups
Metric (250mL)
1.89 c
Tablespoons
32 tbsp
Milliliters
473.2 mL

Kitchen note: Test-kitchen baseline uses spooned & leveled (128g/cup). Switching to dip scooped (145g/cup) changes each cup by 17g—use the packing toggle on the scale bench to match your recipe.

Batch Scaling Around 2 US Cups Cornstarch

Batch scaling conversion table around 2 US Cups of Cornstarch (0.5× to 3× recipe batches in grams, ounces, US cups, and milliliters)
Batch Scale Weight (g / oz) US Cups & Spoons Metric (mL)
Half Batch (0.5×) 128g (4.52 oz) 1 cup 236.6 mL
Standard (1×) 256g (9.03 oz) 2 cups 473.2 mL
1.5× Batch 384g (13.55 oz) 3 cups 709.8 mL
Double Batch (2×) 512g (18.06 oz) 4 cups 946.4 mL
Triple Batch (3×) 768g (27.09 oz) 6 cups 1419.5 mL

Measuring 2 US Cups of Cornstarch in the Kitchen

Measured spooned & leveled at a verified bulk density of 128g per US cup, 2 US cups of cornstarch weighs 256 grams (9.03 ounces). Measured using the dip scooped method (145g/cup), that same 2 cups holds 290g — a 34g 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 2 cups of cornstarch? ▾

2 US Cups of cornstarch measured spooned & leveled weighs 256 grams (9.03 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.