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25g Cornstarch = 3 tbsp + ½ tsp

25 grams of cornstarch equals 3 tbsp + ½ tsp (0.20 US Customary cups, 0.18 Metric 250 mL cups, 46.2 mL, 3.13 tablespoons, or 0.88 oz) when measured spooned & leveled at a verified density of 128g per US Customary cup.

Exact decimal volume: 0.20 US Customary Cups • 0.18 Metric Cups (250 mL) • 3.13 tbsp • 0.88 oz

Batch
Measuring density
Converted Measure
25 g Cornstarch (spooned & leveled) =
3 tbsp + ½ tsp
Physical scoop breakdown0.20 cups
×3
3 tbsp
½ tsp
Edit either side to reverseCornstarch chart →
Grams
25 g
Ounces
0.88 oz
US Cups
3 tbsp + ½ tsp
Metric (250mL)
0.18 c
Tablespoons
3.13 tbsp
Milliliters
46.2 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 25g Cornstarch

Batch scaling conversion table around 25g 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×) 12.5g (0.44 oz) 1 tbsp + 1 ¾ tsp 23.1 mL
Standard (1×) 25g (0.88 oz) 3 tbsp + ½ tsp 46.2 mL
1.5× Batch 37.5g (1.32 oz) ¼ cup + 2 tsp 69.3 mL
Double Batch (2×) 50g (1.76 oz) ⅓ cup + 2 ¾ tsp 92.4 mL
Triple Batch (3×) 75g (2.65 oz) ½ cup + 1 tbsp + 1 ¼ tsp 138.6 mL

Measuring 25g of Cornstarch in the Kitchen

Because 1 US Customary Cup (236.6 mL) of cornstarch weighs 128g when measured spooned & leveled, 25 Grams (25g) translates to 0.20 US cups (3 tbsp + ½ tsp). By contrast, using the dip scooped measure (145g/cup — a 17g per-cup shift), 25g occupies 2 tbsp + 2 ¼ tsp (0.17 cups).

Without a kitchen scale, measure 3 tbsp + ½ tsp (3.13 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 25 grams of cornstarch? ▾

25 grams of cornstarch (spooned & leveled, 128g per US cup) equals 3 tbsp + ½ tsp (0.20 US Customary Cups, 0.18 Metric 250 mL cups, or 3.13 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.