MasterTool

Cornstarch: Cups to Grams

Cornstarch uses approximately 128 grams per level US cup. Half a cup weighs 64 g; 100 g is 0.7813 US cups. Packing, humidity and brand change actual mass.

Cornstarch: Cups to Grams reference last updated · reference source

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Dated static reference; no live data is fetched. Verify current source values and assumptions before relying on results.

What this tool does

Cornstarch uses approximately 128 grams per level US cup. Half a cup weighs 64 g; 100 g is 0.7813 US cups. Packing, humidity and brand change actual mass.

How to use the Cornstarch: Cups to Grams

  1. Check Ingredient: cornstarch.
  2. Check US cups: 1.
  3. Review the Cornstarch: Cups to Grams result and its exact-value comparison table.
  4. Verify assumptions before applying the result.

Formula

grams=cups×ingredient gramsPerCup
value
US cups
ingredient
Ingredient

Static US-cup ingredient masses; packing and humidity alter results. Spoon-and-level flour; brown sugar is packed.

Worked example

Cornstarch: Cups to Grams: Ingredient = cornstarch; US cups = 1. Cornstarch uses approximately 128 grams per level US cup. Half a cup weighs 64 g; 100 g is 0.7813 US cups. Packing, humidity and brand change actual mass.

Inputs

  • US cups1
  • IngredientCornstarch

Result

  • Grams128

Cornstarch US cup weights

US cupsGramsOunces
0.125160.564
0.25321.129
0.333342.6671.505
0.5642.258
0.75963.386
11284.515
1.51926.773
22569.03
338413.545
451218.06

Results explained

Grams
Grams from the formula above. Static US-cup ingredient masses; packing and humidity alter results. Spoon-and-level flour; brown sugar is packed.

Frequently asked questions

Approximately 128 g per US cup (236.5882365 mL).

100 ÷ 128 = 0.7813 US cups.

0.5 × 128 = 64 g.

A US tablespoon is 1/16 US cup: about 8.000 g with the same packing assumption.

Yes. 128 g/cup is approximate; direct weighing avoids volume and packing uncertainty, especially when scaling recipes.