How Much Is 3.39 Ounces of Cornstarch in Cups?

Q: How many cups is 3.39 ounces of cornstarch?

3.39 ounces of cornstarch converts to approximately 0.75 cups.

Q: What is the formula for converting ounces of cornstarch to cups?

Convert ounces to grams first (1 ounce = 28.3495g), then divide by 128 (grams per cup for cornstarch) to get cups.

3.39 ounces of cornstarch equals 0.75 cups. That's 96.10g, and Cornstarch has a density of 128g per cup. Because ounces measure weight and cups measure volume, the result depends on the ingredient's density.

3.39 ounces of cornstarch

0.75cups

Result using all cup standards info

0.75 cups (US) 0.71 cups (Metric Cup) 0.63 cups (Imperial Cup)

Try: 1 ounce = 0.22 cups 2 ounces = 0.44 cups 3 ounces = 0.66 cups 4 ounces = 0.89 cups

Compare: 3.39 ounces all-purpose flour = 0.77 cups 3.39 ounces almond flour = 1.00 cup 3.39 ounces bread flour = 0.76 cups

Convert a different ingredient

3.39 ounces of cornstarch is also

12 tbsp (tablespoons) 6 fl oz (fluid ounces) 177.63 ml (milliliters)

Ounces of Cornstarch info

Cups

0.75

Formula and Step-by-Step

(ounces × 28.35g/oz) ÷ 128g/cup = cups

Start with 3.39 ounces of cornstarch
Convert ounces to grams: 3.39 × 28.35 = 96.10g
1 cup of cornstarch = 128g
96.10g ÷ 128g/cup = 0.75 cups

The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.

Measuring Tip

Humidity affects cornstarch weight. In humid conditions, flour absorbs moisture and weighs more per cup. Store it in an airtight container for consistent results.

Cornstarch at Different Amounts

How cornstarch scales across common ounces measurements. Your amount (3.39 ounces) is highlighted.

Other Amounts of Cornstarch

Ounces	US Cups	Metric Cup	Imperial Cup
1 ounce	0.22 cups	0.21 cups	0.18 cups
2 ounces	0.44 cups	0.42 cups	0.37 cups
3 ounces	0.66 cups	0.63 cups	0.55 cups
3.39 ounces	0.75 cups	0.71 cups	0.63 cups
4 ounces	0.89 cups	0.84 cups	0.74 cups
5 ounces	1.11 cups	1.05 cups	0.92 cups
6 ounces	1.33 cups	1.26 cups	1.11 cups
8 ounces	1.77 cups	1.68 cups	1.48 cups
10 ounces	2.21 cups	2.10 cups	1.84 cups
12 ounces	2.66 cups	2.52 cups	2.21 cups
16 ounces	3.54 cups	3.35 cups	2.95 cups

Understanding the Units

What is an Ounce?

An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.

What is a Cup?

A cup is a US customary unit of volume equal to 236.588 milliliters or 8 fluid ounces. It is the most common volume measurement in American recipes. One cup can be divided into 16 tablespoons or 48 teaspoons.

Frequently Asked Questions

How many cups is 3.39 ounces of cornstarch? expand_more

About 0.75 cups, based on cornstarch having a density of 128g per cup. The exact amount depends on how the ingredient is measured and the specific product.

What is the formula for converting ounces of cornstarch to cups? expand_more

First convert ounces to grams (1 ounce = 28.3495g), then divide by 128 (grams per cup). For 3.39 ounces: 3.39 × 28.3495 = 96.10g, then 96.10 ÷ 128 = 0.75 cups.

How do I measure cornstarch accurately? expand_more

For the most accurate results, weigh cornstarch on a kitchen scale. If measuring by volume, sift or whisk first to break up clumps, then spoon into the measuring cup and level off. Do not scoop directly from the bag.

Does the measurement method affect how much cornstarch weighs per cup? expand_more

Yes, quite a bit. If you spoon the flour into your measuring cup and level it off, you will get about 128 grams per cup. If you dip directly into the flour bag and sweep level, the flour packs tighter and you can end up with 140.8 to 160 grams per cup instead. This conversion uses the spoon-and-level method, which is the standard most baking references follow.

How do I convert cups of cornstarch back to ounces? expand_more

Reverse the conversion: 0.75 cups × 128g/cup = 96.10g, then 96.10g ÷ 28.3495 = 3.39 ounces. Or use the Cups to Ounces converter.