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Sugar Weight Calculator

Enter the number of cups and choose the sugar type.

How it is calculated

The tool multiplies the number of cups by a fixed weight per cup for the sugar type: grams = cups × density, with 200 g per cup for granulated, 220 g for brown and 120 g for powdered sugar. It then converts to ounces with oz = grams ÷ 28.35. Grams are rounded to a whole number and ounces to two decimals. Cups must be greater than zero, and fractions such as 0.25 or 1.5 work. The densities are single typical values: brown sugar is assumed packed, and a cup that is levelled loosely, sifted or heaped will weigh differently. Any other sugar type is not accepted.

Worked example

A recipe calls for 1.5 cups of brown sugar. Density for brown sugar is 220 g per cup, so 1.5 × 220 = 330 g. In ounces: 330 ÷ 28.35 = 11.64. Result: 330 g, or 11.64 oz.

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Common mistakes

  • Using the granulated setting for every recipe. Powdered sugar is about 40 percent lighter per cup than granulated, so choosing the wrong type misses the weight by tens of grams.
  • Not packing brown sugar. The 220 g value assumes it is pressed into the cup, and a loosely spooned cup weighs less.
  • Expecting a cup of sifted powdered sugar to match the figure. The 120 g value is for an ordinary cup, and sifting before measuring changes the weight.
  • Mixing up ounces by weight with fluid ounces. The oz result is weight, not volume.
  • Entering tablespoons or grams in the cups field. One cup is 16 tablespoons, so 4 tablespoons is 0.25 cups.

About this calculator

Volume-to-weight conversions for sugar aren't universal because different sugar types pack differently: a US cup of granulated sugar weighs about 200 g, a packed cup of brown sugar weighs closer to 220 g since it's pressed down when measured, and a cup of powdered (icing) sugar weighs only about 120 g because it's much lighter and airier.

This matters most when following recipes written in cups but scaling or weighing ingredients precisely, which professional bakers and anyone converting a US recipe to metric need to do — weighing sugar rather than scooping it is more accurate and more consistent between bakes, and this calculator gives the gram and ounce equivalents for the amount and type you specify.

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Comments (1)

  • Editorial team

    Cup recipes assume one fixed weight per cup, so scooped sugar can differ from the figure. Two cups of powdered sugar come out at 240 g, or 8.47 oz, yet the same two cups of granulated sugar weigh 400 g. Brown sugar here is assumed packed. If a cake is sensitive to sugar, weigh it on a scale rather than trusting the cup. Which sugar do you convert most often?

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