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How Much Is 1.29 Cups of Brown Sugar in Ounces?

Converting 1.29 cups of brown sugar to ounces gives 10.01 oz. One cup of brown sugar weighs 220g, so 1.29 cups is 1.29 × 220 = 283.8g (10.01 oz). This conversion is specific to brown sugar because each ingredient has a different density.

1.29 cups of brown sugar
=
10.01oz
Result using all cup standards info
10.01 oz (US) 10.58 oz (Metric Cup) 12.02 oz (Imperial Cup)
1.29 cups of brown sugar is also
10.01

Formula and Step-by-Step

cups × 220g/cup ÷ 28.3495g/oz = ounces
  1. Start with 1.29 cups of brown sugar
  2. 1 cup of brown sugar = 220g
  3. 1.29 × 220 = 283.8g
  4. Convert grams to ounces: 283.8 ÷ 28.3495 = 10.01 oz

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

Measuring Tip

Brown sugar should always be firmly packed into the measuring cup. Loosely measured brown sugar can weigh 15-20% less than packed.

Brown Sugar at Different Amounts

How brown sugar scales across common cups measurements. Your amount (1.29 cups) is highlighted.

0.33 cups2.56 oz0.5 cups3.88 oz0.75 cups5.82 oz1 cup7.76 oz1.29 cups10.01 oz1.5 cups11.64 oz2 cups15.52 oz3 cups23.28 oz

For reference, 1.29 cups of brown sugar (283.8g) is close in weight to a can of soup (305g).

Other Amounts of Brown Sugar

Cups US Ounces Metric Cup Imperial Cup
0.25 cups 1.94 oz 2.05 oz 2.33 oz
0.33 cups 2.56 oz 2.71 oz 3.08 oz
0.5 cups 3.88 oz 4.10 oz 4.66 oz
0.75 cups 5.82 oz 6.15 oz 6.99 oz
1 cup 7.76 oz 8.20 oz 9.32 oz
1.29 cups 10.01 oz 10.58 oz 12.02 oz
1.5 cups 11.64 oz 12.30 oz 13.98 oz
2 cups 15.52 oz 16.40 oz 18.64 oz
3 cups 23.28 oz 24.60 oz 27.96 oz
4 cups 31.04 oz 32.80 oz 37.28 oz
5 cups 38.80 oz 41.00 oz 46.60 oz

Understanding the Units

What is a Cup?

In US cooking, a cup measures volume, not weight. One standard US cup holds 236.588 ml of liquid. Because different ingredients have different densities, a cup of one ingredient can weigh very differently from a cup of another.

What is an Ounce?

Ounces are commonly used in US recipes for cheese, meat, chocolate, and other ingredients sold by weight. Many kitchen scales offer both gram and ounce readings.

Frequently Asked Questions

About 10.01 oz, based on brown sugar having a density of 220g per cup. The exact amount depends on how the ingredient is measured and the specific product.
Multiply the number of cups by 220 (grams per cup for brown sugar), then divide by 28.3495 to convert grams to ounces. For 1.29 cups: 1.29 × 220 = 283.8g, then 283.8 ÷ 28.3495 = 10.01 oz.
For the most accurate results, weigh brown sugar on a kitchen scale. If measuring by volume, pack it firmly into the measuring cup and level it off. This conversion assumes packed brown sugar, which is the standard method.
Brown sugar should be firmly packed into the measuring cup. This is the standard method and what this conversion assumes. Loosely measured brown sugar will weigh significantly less.
Reverse the conversion: 10.01 oz × 28.3495 = 283.8g, then 283.8g ÷ 220 = 1.29 cups. Or use the Ounces to Cups converter.