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Actual drinking cups can vary significantly in terms of size and are generally not a good representation of this unit. customary teaspoons.Ĭurrent use: The cup is typically used in cooking to measure liquids and bulk foods, often within the context of serving sizes. One United States customary cup is equal to 236.5882365 milliliters as well as 1/16 U.S. The metric cup is defined as 250 milliliters. While technically, an ounce is a measure of mass, and weight is actually a measure of force, the two are equivalent as long as we are performing our calculations on Earth.įor example, an object with a mass of 1 ounce weighs 1 ounce on Earth, but only weighs one-sixth of that on the moon, yet still has the same mass.Definition: A cup is a unit of volume in the imperial and United States customary systems of measurement. Ounces can be abbreviated as oz for example, 1 ounce can be written as 1 oz.Īn ounce is also frequently referred to as a unit of weight. The ounce is a US customary and imperial unit of mass. The common ounce should not be confused with the troy ounce, which is equal to 1/12 of a troy pound. One ounce is a unit of mass/weight equal to 1/16 of a pound or 28.349523 grams. For example, 1 cup can be written as 1 c or 1 C. Cups can be abbreviated as c, and are also sometimes abbreviated as C. The cup is a US customary unit of volume. One cup is equal to 236.588 milliliters, but in nutrition labeling, one cup is rounded to 240 milliliters. The cup should not be confused with the metric cup or the teacup, which are different units of volume. The cup is a unit of volume equal to 16 tablespoons or 8 fluid ounces.

The table below shows how many ounces of various wet and dry ingredients are in a cup.Ĭup measurements converted to ounces for commonly used cooking and baking ingredients. The actual weight of a cup will vary depending on the density of the material. Keep reading to learn more about each unit of measure. It is common to mix powdered chemicals with liquid, or aqueous, chemicals, and this is where it becomes very useful to convert between weights and volumes. When performing chemical reactions by combining separate chemicals to produce a new chemical, one must know the exact amount of each chemical to add in order to maximize the yield of the reaction.

When a scale is not available, a calculator like the one above is a good way to estimate the volume to weight conversion.įor cooking and baking ingredients, you can get more specific results using our butter, flour, and sugar conversion calculators.Īnother useful application of weight and volume conversions is chemistry. The best way to ensure an accurate conversion is to use a scale. The density of dry ingredients can vary for a variety of reasons, such as compaction and clumping. This formula is for converting to ounces in weight, if you're trying to convert to a volume measurement in fluid ounces, try our cups to fluid ounces calculator.Ĭups and ounces are both commonly used to measure cooking ingredients.įor cooking applications, most chefs suggest measuring dry ingredients by weight rather than volume to improve accuracy in the measurements. If the density is given in grams per milliliter (g/mL), then first multiply the density by 8.3454 to convert to oz/c.įor a density given in g/mL, you can use this simple formula to convert: Note that in order for this to work, the density must be in ounces per cup (oz/c). To convert a measurement in cups to ounces, multiply the volume by the density of the ingredient or material. Therefore, to convert between cups and ounces of an ingredient or substance, we must either multiply or divide by its density, depending on which direction we are performing the conversion. In this case, we need to account for the density of the substance whenever we do a conversion.

Since cups are a unit of volume and ounces are a unit of mass, which are different physical quantities, we need to know one more physical quantity of the ingredient or substance to convert between them. He holds several degrees and certifications. Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction.