# How Many Ounces

in Gallon, Liter, Quart, Pint, Pound, Cup ...

If You have the need to quickly convert ounces to other units and back, You have come to the right place.

How many ounces are in a:

 Gallon Pound Pint Quart Kilogram Liter Cup Tablespoon Teaspoon

With several systems of units in use today, it's no wonder that converting units from one system to another can be a rather daunting task.

After all, NASA and ESA (European Space Agency) tend to lose here and there their space probes due to unit conversions, despite these conversions being done to who knows what decimal.

However, for everyday use, such accuracy is not required - no recipe was ever ruined because somebody added 199.9g of sugar instead of 200g. Just an example.

The most commonly used unit systems include the International SI system of units, the US system of units, and the Imperial (mostly UK) system of units.

## Most Popular Weight Units

SI weight unit for weight is a kilogram (or often just 'kilo'), while non-SI units are Imperial Ton, Tonne, 1 US Ton, Stone, Pound, and Ounce.

Other units may be used as well, but they are not used that often, like grain, drachm, slug, etc.

 Non-SI Weight Units SI Weight Units 1 Imperial Ton = 2240 Pounds 1016.05 kg 1 Tonne = 2204.62 Pounds 1000 kg 1 US Ton = 2000 Pounds 907.185 kg 1 Quarter = 28 Pounds 12.70058 kg 1 Stone = 14 Pounds 6.35029 kg 1 Pound 0.453592 kg 1 Ounce =  1/16 Pound = 0.0625 Pounds 0.0283495 kg = 28.3495g

## Most Popular Volume Units

The most popular non-SI units for length are Nautical Mile, Mile, Yard, Foot, and Inch. Again, there are other units as well, but these are the most popular and still in frequent use.

 Non-SI Lenght Units SI Length Units 1 Nautical Mile = 2025.37 Yards 1852 m 1 Mile = 1760 Yards 1609.34 m 1 Yard = 3 feet = 36 inches 0.9144 m = 91.44 cm 1 Foot = 0.3333 Yard = 12 Inches 0.3048 m = 30.48 cm 1 Inch 0.0254 m = 2.54 cm

The units for volume are often derived from the units of length, but not necessarily, for example:

 Non-SI Volume Units SI Volume Units 1 Cubic Yard = 27 Cubic Feet 0.764554857984 m3 = 764.554857984 liters 1 Cubic Foot = 1728 Cubic Inches = 957.506 US Fluid Ounces 0.0283168 m3 =  28.3168 liters Dry Quart (US) = 2 Dry Pints (US) = 67.2 Cubic Inches 1101.22 milliliters = 1.10122 liters Dry Pint (US) = 33.6 Cubic Inches 550.6 milliliters = 0.5506 liters 1 Cubic Inch =  0.554113 US Fluid Ounces 0.0163871 liters = 16.3871 milliliters

Note: 1 Cubic Meter (m3) = 1000 liters = 1000 dm3

Also, sometimes the Imperial (British) system uses one unit (quart, pint) for liquid and dry measures, while the US system uses two units (dry quart, liquid quart, dry pint, liquid pint).

Probably the largest source of confusion among the units is conversion between US measurement system and Imperial (UK) measurement system:

 US Units (Volume) Imperial Units (Volume) 1 US Liquid Gallon = 128 US Fluid Ounces = 3.78541 liters 1 Imp Liquid Gallon = 160 Imp Fluid Ounces =  4.54609 liters 1 US Liquid Gallon =  0.832674 Imp Liquid Gallon 1 Imp Liquid Gallon =  1.20095 US Liquid Gallon 1 US Liquid Quart = 32 US Fluid Ounces = 0.946353 liters 1 Imp Liquid Quart =  40 Imp Fluid Ounces = 1.13652 liters 1 US Liquid Quart =  0.832674 Imp Liquid Quart 1 Imp Liquid Quart =  1.20095 US Liquid Quart 1 US Liquid Pint = 16 US Fluid Ounces = 0.473176 liters 1 Imp Liquid Pint =  20 Imp Fluid Ounces = 0.568261 liters 1 US Liquid Pint =  0.832674 Imp Liquid Pint 1 Imp Liquid Pint = 1.20095 US Liquid Pint 1 US Cup = 8.11537 US Fluid Ounces = 0.24 liters 1 Imp Cup = 10 Imp Fluid Ounces = 0.284131 liters 1 US Cup =  0.844682 Imp Cup 1 Imp Cup =  1.18388 US Cup 1 US Fluid Ounce = 29.5735 milliliters 1 Imp Fluid Ounce = 28.4131 milliliters 1 US Fluid Ounce = 1.04084 Imp Fluid Ounces 1 Imp Fluid Ounce = 0.96076 US Fluid Ounces 1 US Tablespoon = 1/2 US Fluid Ounces = 14.7868 milliliters 1 Imp Tablespoon = 0.625 Imp Fluid Ounces = 17.7582 milliliters 1 US Tablespoon = 0.832674 Imp Tablespoon 1 Imp Tablespoon =  1.20095 US Tablespoon 1 US Teaspoon = 1/6 US Fluid Ounces = 4.92892 milliliters 1 Imp Teaspoon = 0.208333 Imp Fluid Ounces = 5.91939 milliliters 1 US Teaspoon = 0.832674 Imp Teaspoon 1 Imp Teaspoon = 1.20095 US Teaspoon

## International System (SI) of Units Official Prefixes

In order to write extra small and extra large values more easily International System (SI) of Units uses prefixes that ranges from yocto (y, 10-24) to yotta (Y, 1024).

The following chart lists the International System of Units (SI) official prefixes:

 Prefix Base 10 Decimal English Word Name Symbol Short Scale Long Scale yotta Y 1024 1 000 000 000 000 000 000 000 000 septillion quadrillion zetta Z 1021 1 000 000 000 000 000 000 000 sextillion trilliard exa E 1018 1 000 000 000 000 000 000 quintillion trillion peta P 1015 1 000 000 000 000 000 quadrillion billiard tera T 1012 1 000 000 000 000 trillion billion giga G 109 1 000 000 000 billion milliard mega M 106 1 000 000 million kilo k 103 1 000 thousand hecto h 102 100 hundred deca da 101 10 ten - - 100 1 one deci d 10-1 0.1 tenth centi c 10-2 0.01 hundredth milli m 10-3 0.001 thousandth micro μ 10-6 0.000 001 millionth nano n 10-9 0.000 000 001 billionth milliardth pico p 10-12 0.000 000 000 001 trillionth billionth femto f 10-15 0.000 000 000 000 001 quadrillionth billiardth atto a 10-18 0.000 000 000 000 000 001 quintillionth trillionth zepto z 10-21 0.000 000 000 000 000 000 001 sextillionth trilliardth yocto y 10-24 0.000 000 000 000 000 000 000 001 septillionth quadrillionth

Note: the 'Short Scale' is in use, for example, in the United States, while the 'Long Scale' is in use, for example, in Europe - this may be the largest source of mistakes and errors in everyday speech and conversation.

Now that You know the relations between measurement systems, feel free to check how many ounces are in a:

 Gallon Pound Pint Quart Kilogram Liter Cup Tablespoon Teaspoon

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