Just a slight change in portions can ultimately affect the taste and texture of a recipe, so precise measurements are often necessary. Since some recipes list ingredients by weight, it may be difficult to cook or bake with sugar without a scale. An easy alternative is to measure sugar by volume. The conversion from weight to volume depends on the kind of sugar you're using.
Read the recipe for the kind of sugar needed. Notice whether your recipe is written using imperial units (ounces) or metric weights (grams).
Use the weight equivalent of one cup of sugar to calculate the amount you'll need:
For example, if the recipe calls for 400 grams of white sugar, you'll need 2 cups. If the recipe calls for 250 grams of icing sugar, you'll need 2 cups.
Fill the measuring cup with the volume of sugar required, and complete the recipe as usual.