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How Much Is 5.5 Pounds of Powdered Sugar in Cups?

5.5 pounds of powdered sugar equals 20.79 cups. Powdered sugar has a density of 120g per cup. A lighter ingredient like cocoa powder (86g/cup) would fill even more volume at the same weight, which is why ingredient-specific conversions matter.

5.5 pounds of powdered sugar
=
20.79cups
Result using all cup standards info
20.79 cups (US) 19.67 cups (Metric Cup) 17.31 cups (Imperial Cup)
20.79

Formula and Step-by-Step

(pounds × 453.59g/lb) ÷ 120g/cup = cups
  1. Start with 5.5 pounds of powdered sugar
  2. Convert pounds to grams: 5.5 × 453.59 = 2,494.76g
  3. 1 cup of powdered sugar = 120g
  4. 2,494.76g ÷ 120g/cup = 20.79 cups

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

Measuring Tip

Powdered sugar dissolves faster than granulated, making it ideal for frostings and glazes. Weight is the most reliable way to measure it consistently.

Powdered Sugar at Different Amounts

How powdered sugar scales across common pounds measurements. Your amount (5.5 pounds) is highlighted.

1 lb3.78 cups1.5 lb5.67 cups2 lb7.56 cups3 lb11.34 cups4 lb15.12 cups5 lb18.90 cups5.5 lb20.79 cups10 lb37.80 cups

Other Amounts of Powdered Sugar

Pounds US Cups Metric Cup Imperial Cup
0.25 pounds 0.94 cups 0.89 cups 0.79 cups
0.5 pounds 1.89 cups 1.79 cups 1.57 cups
0.75 pounds 2.83 cups 2.68 cups 2.36 cups
1 pound 3.78 cups 3.58 cups 3.15 cups
1.5 pounds 5.67 cups 5.37 cups 4.72 cups
2 pounds 7.56 cups 7.15 cups 6.29 cups
3 pounds 11.34 cups 10.73 cups 9.44 cups
4 pounds 15.12 cups 14.31 cups 12.59 cups
5 pounds 18.90 cups 17.89 cups 15.74 cups
5.5 pounds 20.79 cups 19.67 cups 17.31 cups
10 pounds 37.80 cups 35.77 cups 31.47 cups

Understanding the Units

What is a Pound?

The abbreviation "lb" comes from the Latin word "libra." One pound equals exactly 453.59237 grams. For rough mental math, 1 pound is slightly less than half a kilogram.

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.

Frequently Asked Questions

About 20.79 cups, based on powdered sugar having a density of 120g per cup. The exact amount depends on how the ingredient is measured and the specific product.
First convert pounds to grams (1 pound = 453.592g), then divide by 120 (grams per cup). For 5.5 pounds: 5.5 × 453.592 = 2,494.76g, then 2,494.76 ÷ 120 = 20.79 cups.
For the most accurate results, weigh powdered sugar on a kitchen scale. If measuring by volume, spoon the ingredient into the measuring cup and level it off with a straight edge rather than scooping directly.
Granulated and powdered sugars should be spooned into the measuring cup and leveled off. Do not pack them unless the recipe specifically says to.
Reverse the conversion: 20.79 cups × 120g/cup = 2,494.76g, then 2,494.76g ÷ 453.592 = 5.5 pounds. Or use the Cups to Pounds converter.