Ounces to Fluid Ounces [water]
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Conversion Table

How to convert

1 ounce (oz) = 0.958611419 fluid ounce (fl oz). Ounce (oz) is a unit of Weight used in Standard system. Fluid Ounce (fl oz) is a unit of Volume used in Standard system. Please note this is weight to volume conversion, this conversion is valid only for pure water at temperature 4 °C.
US oz = 28.349523125 g
US fl oz = 29.5735295625 ml (milliliters) = 29.5735295625 g (grams) of pure water at temperature 4 °C.
US cup = 8 fl oz = 236.5882365 ml (milliliters) = 236.5882365 g (grams) of pure water at temperature 4 °C.

Definition of the Ounce

The ounce is defined differently in different systems of measurement. The most common ounce is the international avoirdupois ounce, which is equal to 28.349523125 grams or 437.5 grains. This is the ounce that is used for most purposes, such as measuring food, postal items, fabric, paper and boxing gloves. The avoirdupois ounce is one-sixteenth of an avoirdupois pound, which is defined as 7000 grains.

Another ounce is the international troy ounce, which is equal to 31.1034768 grams or 480 grains. This is the ounce that is used for measuring precious metals and gems, such as gold, silver, platinum and diamonds. The troy ounce is one-twelfth of a troy pound, which is defined as 5760 grains.

A third ounce is the apothecaries’ ounce, which is also equal to 480 grains, but it is divided into eight drams instead of twelve pennyweights like the troy ounce. The apothecaries’ ounce is used for measuring medicines and drugs.

There are also other historical or regional ounces that have different values, such as the Spanish ounce, the French ounce, the Portuguese ounce, the Roman/Italian ounce, the Dutch metric ounce and the Chinese metric ounce.

How to Convert Ounces

Ounces can be converted to other units of weight by using conversion factors or formulas. Here are some examples of how to convert ounces to other units of weight in the US customary system and the SI system:

• To convert ounces to pounds, divide by 16. For example, 32 oz = 32/16 = 2 lb.
• To convert ounces to tons (short), divide by 32000. For example, 64000 oz = 64000/32000 = 2 tons.
• To convert ounces to grams, multiply by 28.349523125. For example, 4 oz = 4 x 28.349523125 = 113.3980925 g.
• To convert ounces to kilograms, multiply by 0.028349523125. For example, 8 oz = 8 x 0.028349523125 = 0.226796185 kg.
• To convert ounces to milligrams, multiply by 28349.523125. For example, 2 oz = 2 x 28349.523125 = 56699.04625 mg.
• To convert ounces to micrograms, multiply by 28349523.125. For example, 1 oz = 1 x 28349523.125 = 28349523.125 µg.

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.

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