The density of dry ingredients can vary for a variety of reasons, such as compaction and clumping. Ounces and fluid 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 1.0432 to convert to oz/fl oz.įor a density given in g/mL, you can use this simple formula to convert:įluid ounces = 5 oz / 1.0432 × 0.7 g/mL = 6.8472 fl oz When to Convert Ounces to Fluid Ounces Note that in order for this to work, the density must be in ounces per fluid ounce (oz/fl oz). To convert a measurement in ounces to fluid ounces, divide the weight by the density of the ingredient or material. To get a measurement in ounces, you might use a scale, while to get a measurement in fluid ounces, you might use a measuring cup to measure the volume of liquid it contains.Īlthough they're different, you can convert from one measurement to the other using a conversion formula. Ounces are a measure of the weight of a solid object, and fluid ounces are a measure of liquid volume.īoth units are also measured in different ways. While they sound similar, ounces and fluid ounces are different forms of measurement. Therefore, to convert between ounces and fluid 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 ounces are a unit of mass and fluid ounces are a unit of volume, 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.
Convert fluid ounces to cups how to#
How to Convert Fluid Ounce (US) to Cup (US)Įxample: convert 15 fl oz (US) to cup (US):ġ5 fl oz (US) = 15 × 0.125 cup (US) = 1.Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. Standardized measuring cups are used instead.įluid Ounce (US) to Cup (US) Conversion Table Fluid Ounce (US) 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. Cup (US)ĭefinition: A cup is a unit of volume in the imperial and United States customary systems of measurement. It is mostly used in the United States and the United Kingdom, as one of the many measurements of volume used. After the adoption of the international inch in 1959, the US fluid ounce became equal to exactly 29.5735295625 mL.Ĭurrent use: As the name indicates, the fluid ounce is typically used as a measurement of liquid volume. The United States fluid ounce was initially based on the wine gallon used in England prior to 1824. The imperial gallon's definition was later changed to be equal to 4.54609 liters, making the imperial fluid ounce equal to exactly 28.4130625 mL.
In 1824, the imperial gallon was defined as the volume of ten pounds of water at a temperature of 16.7☌.
History/origin: The fluid ounce was originally based on the volume occupied by one ounce (weight) of a given liquid such as wine or water, thus varying based on the system being used. The imperial fluid ounce is 1/20 of an imperial pint, and 1/160 of an imperial gallon, which is equal to 28.4 mL. The US fluid ounce is 1/16 of a US fluid pint, and 1/128 of a US liquid gallon, which is equal to 29.57 mL. Definition: A fluid ounce (symbol: fl oz) is a unit of volume in the imperial and United States customary systems of measurement.
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