Cups to Fluid Ounces Converter (cup to fl oz)
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Convert Fluid Ounces to Cups (fl oz to cup) ▶

Conversion Table

cups to fluid ounces
cupfl oz
1 cup 8 fl oz
2 cup 16 fl oz
3 cup 24 fl oz
4 cup 32 fl oz
5 cup 40 fl oz
6 cup 48 fl oz
7 cup 56 fl oz
8 cup 64 fl oz
9 cup 72 fl oz
10 cup 80 fl oz
11 cup 88 fl oz
12 cup 96 fl oz
13 cup 104 fl oz
14 cup 112 fl oz
15 cup 120 fl oz
16 cup 128 fl oz
17 cup 136 fl oz
18 cup 144 fl oz
19 cup 152 fl oz
20 cup 160 fl oz

How to convert

1 cup (cup) = 8 fluid ounce (fl oz). Cup (cup) is a unit of Volume used in Cooking system. Fluid Ounce (fl oz) is a unit of Volume used in Standard system.

Cups: A Unit of Volume

Cups are a unit of volume that are used to measure liquids, such as water, milk, oil, vinegar, etc. They are also used to measure some dry ingredients, such as sugar, flour, rice, etc. They are different from tablespoons and teaspoons, which are smaller units of volume. They are also different from quarts and gallons, which are larger units of volume. They are also different from barrel of oil equivalent (BOE), which is a unit of energy based on the approximate energy released by burning one barrel of crude oil.

Definition of Cups

A cup is defined as 250 milliliters (ml) in the metric system of measurement. It is equivalent to 8.45 fluid ounces or 0.25 quarts in the US customary system. A cup is also equal to 8.8 imperial fluid ounces or 0.22 imperial quarts in the British imperial system.

History of Cups

The origin of the term cup as a unit of measure is uncertain, but it may have derived from the Latin word cuppa, which means a small vessel for drinking. Cups have been used since ancient times to store and transport various liquids and dry goods. The size and shape of cups varied depending on the type and quantity of the goods, the availability of materials, and the customs of different regions and countries.

The use of cups as a unit of measure dates back to the medieval times, when the European system of measurement was established. The standard size of these cups was based on the pint, which was originally defined as the volume of a pound of water at 62 °F. The cup was convenient for measuring and dividing smaller amounts of liquids and dry goods.

The use of cups as a unit of measure continued until the 20th century, when the metric system of measurement was adopted in most countries. The cup was gradually replaced by units such as milliliters, grams, etc. However, some countries and regions still use cups for certain types of liquids and dry ingredients, especially in cooking and baking.

How to Convert Cups

To convert cups to other units of volume, one can use the following formulas:

  • To convert cups to milliliters: multiply by 250
  • To convert cups to fluid ounces: multiply by 8.45
  • To convert cups to tablespoons: multiply by 16
  • To convert cups to quarts: multiply by 0.25
  • To convert cups to gallons: multiply by 0.0625
  • To convert cups to BOE: divide by 1,200

Where Cups are Used

Cups are mainly used in cooking and baking in some countries and regions that use the US customary system or the British imperial system of measurement. They are often used for measuring and adding liquids such as water, milk, oil, vinegar, etc., and dry ingredients such as sugar, flour, rice, etc., to recipes.

In some countries that use the metric system of measurement, such as Canada and Australia, cups are sometimes used as an informal or approximate unit of volume for certain types of liquids and dry ingredients. For example, in Canada, maple syrup is sometimes sold by the cup, which is equivalent to about 250 ml or 0.25 liters.

In some countries that have their own traditional units of volume based on vessels or containers, such as China and Japan, cups are not commonly used or recognized. Instead, they use units such as sheng (about 1 liter), ge (about 200 ml), or chawan (about 180 ml).

Example Conversions of Cups to Other Units

Here are some examples of converting cups to other units of volume:

  • 1 cup = 250 milliliters

  • 2 cups = 16.9 fluid ounces

  • 3 cups = 48 tablespoons

  • 4 cups = 1 quart

  • 5 cups = 0.3125 gallons

  • 6 cups = 0.005 BOE

  • 1 milliliter = 0.004 cup

  • 2 fluid ounces = 0.237 cup

  • 3 tablespoons = 0.188 cup

  • 4 quarts = 16 cups

  • 5 gallons = 80 cups

  • 6 BOE = 7,200 cups.

US customary cup can be abbreviated as c., = 236.5882365 millilitres = 1/16 U.S. customary gallon = 1/4 U.S. customary quart

Fluid Ounces: A Unit of Volume

Fluid ounces are a unit of volume that are used to measure liquids, such as water, milk, oil, wine, etc. They are also used to measure some dry goods, such as grains, fruits, nuts, etc. They are different from ounces, which are a unit of weight or mass. They are also different from liters, which are a larger unit of volume. They are also different from barrel of oil equivalent (BOE), which is a unit of energy based on the approximate energy released by burning one barrel of crude oil.

Definition of Fluid Ounces

A fluid ounce is a unit of volume or capacity in both the imperial and US customary systems of measurement. However, the size of a fluid ounce varies depending on the type of fluid ounce used:

  • A UK fluid ounce is equal to one twentieth of a UK pint in the imperial system of measurement. It is equivalent to 28.413 milliliters or 0.96076 US fluid ounces in the metric system.
  • A US fluid ounce is equal to one sixteenth of a US liquid pint in the US customary system of measurement. It is equivalent to 29.573 milliliters or 1.0408 UK fluid ounces in the metric system.
  • A US food labeling fluid ounce is exactly 30 milliliters.

History of Fluid Ounces

The origin of the term fluid ounce as a unit of measure is uncertain, but it may have derived from the Latin phrase fluida uncia, which means fluid ounce. Fluid ounces have been used since ancient times to store and transport various liquids and dry goods. The size and shape of fluid ounces varied depending on the type and quantity of the goods, the availability of materials, and the customs of different regions and countries.

The use of fluid ounces as a unit of measure dates back to the medieval times, when the European system of measurement was established. The standard size of these fluid ounces was based on the wine gallon, which was originally defined as the volume of eight pounds of wine at 62 °F. The fluid ounce was convenient for measuring and dividing smaller amounts of liquids and dry goods.

The use of fluid ounces as a unit of measure continued until the 20th century, when the metric system of measurement was adopted in most countries. The fluid ounce was gradually replaced by units such as liters, grams, etc. However, some countries and regions still use fluid ounces for certain types of liquids and dry goods, especially in the United States and the United Kingdom and Ireland and some Commonwealth nations.

How to Convert Fluid Ounces

To convert fluid ounces to other units of volume, one can use the following formulas:

  • To convert UK fluid ounces to liters: multiply by 0.028413

  • To convert UK fluid ounces to cubic inches: multiply by 1.7339

  • To convert UK fluid ounces to US fluid ounces: multiply by 0.96076

  • To convert UK fluid ounces to BOE: divide by 700

  • To convert US fluid ounces to liters: multiply by 0.029573

  • To convert US fluid ounces to cubic inches: multiply by 1.8047

  • To convert US fluid ounces to UK fluid ounces: multiply by 1.0408

  • To convert US fluid ounces to BOE: divide by 600

  • To convert US food labeling fluid ounces to liters: multiply by 0.03

  • To convert US food labeling fluid ounces to cubic inches: multiply by 1.831

  • To convert US food labeling fluid ounces to UK fluid ounces: multiply by 1.0559

  • To convert US food labeling fluid ounces to BOE: divide by 583

Where Fluid Ounces are Used

Fluid ounces are mainly used in some countries and regions that use the imperial system or the US customary system or the US food labeling system of measurement. They are often used for measuring and adding liquids such as water, milk, oil, wine, etc., and dry goods such as grains, fruits, nuts, etc., to recipes.

In some countries that use the metric system of measurement, such as Canada and Australia, fluid ounces are not commonly used or recognized. Instead, they use units such as liters, grams, etc.

Example Conversions of Fluid Ounces to Other Units

Here are some examples of converting fluid ounces to other units of volume:

  • 1 UK fl oz = 0.028413 liters

  • 2 UK fl oz = 3.4678 cubic inches

  • 3 UK fl oz = 2.8823 US fl oz

  • 4 UK fl oz = 0.0057 BOE

  • 1 US fl oz = 0.029573 liters

  • 2 US fl oz = 3.6094 cubic inches

  • 3 US fl oz = 3.1224 UK fl oz

  • 4 US fl oz = 0.0067 BOE

  • 1 US food labeling fl oz = 0.03 liters

  • 2 US food labeling fl oz = 3.662 cubic inches

  • 3 US food labeling fl oz = 3.1677 UK fl oz

  • 4 US food labeling fl oz = 0.0069 BOE.

The US fluid ounce, defined as 1/128 US gallon, equals to 29.5735295625 milliliters.



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