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85g Cornstarch = ⅔ cup

85 grams of cornstarch equals ⅔ cup (0.66 US Customary cups, 0.63 Metric 250 mL cups, 157.1 mL, 10.63 tablespoons, or 3 oz) when measured spooned & leveled at a verified density of 128g per US Customary cup.

Exact decimal volume: 0.66 US Customary Cups • 0.63 Metric Cups (250 mL) • 10.63 tbsp • 3 oz

Batch
Measuring density
Converted Measure
85 g Cornstarch (spooned & leveled) =
⅔ US Cup
Physical scoop breakdown0.66 cups
1/3 cup
1/3 cup
Edit either side to reverseCornstarch chart →
Grams
85 g
Ounces
3 oz
US Cups
⅔ cup
Metric (250mL)
0.63 c
Tablespoons
10.63 tbsp
Milliliters
157.1 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 85g Cornstarch

Batch scaling conversion table around 85g 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×) 42.5g (1.5 oz) ⅓ cup 78.6 mL
Standard (1×) 85g (3 oz) ⅔ cup 157.1 mL
1.5× Batch 127.5g (4.5 oz) 1 cup 235.7 mL
Double Batch (2×) 170g (6 oz) 1 ⅓ cups 314.2 mL
Triple Batch (3×) 255g (8.99 oz) 2 cups 471.3 mL

Measuring 85g of Cornstarch in the Kitchen

Because 1 US Customary Cup (236.6 mL) of cornstarch weighs 128g when measured spooned & leveled, 85 Grams (85g) translates to 0.66 US cups (⅔ cup). By contrast, using the dip scooped measure (145g/cup — a 17g per-cup shift), 85g occupies ½ cup + 1 tbsp + 1 ¼ tsp (0.59 cups).

Without a kitchen scale, measure ⅔ cup (10.63 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 85 grams of cornstarch? ▾

85 grams of cornstarch (spooned & leveled, 128g per US cup) equals ⅔ cup (0.66 US Customary Cups, 0.63 Metric 250 mL cups, or 10.63 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.