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	Base 10	Decimal	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

Here are our latest Articles and Guides:

How Many Cups Are in a Quart: Cups to Quarts and Quarts to Ounces

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However, when converting these units, some care must be taken since there are few versions of both quarts and cups.

How Many Yards Are In A Meter: Meters to Yards and Yards to Meters Conversion

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This conversion is very easy since the yard features a standardized value given in meters (m).

How Many Inches Are In A Meter: Meters to inches

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Conversion of inches to meters and vice versa is an easy one since both units are used for measuring length or distance. And while the meter is a unit of the SI system of units, the inch is not a unit of the SI system of units, but it is still used very often (obviously).

This conversion is easy since the inch features a standardized value in meters (m).

How Many Grams Are in a Tablespoon: Grams to Tablespoon and Tablespoon to Grams

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Mph to Knots and Knot to Mph Conversion

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How Many Tablespoons Are in a Cup: Tbsp to Cups and Cups to Tbsp

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What is Half of a 3/4 Cup?

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How Many Teaspoons Are in a Tablespoon?

teaspoon m Both teaspoons and tablespoons are non-SI measures of volume, with both US and Imperial measures being used today.

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How Many Grams Are in a Cup: Grams to Cups and Cups to Grams

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How Many Joules in a Calorie: Joules to Calories (J to cal) and Calories to Joules (cal to J) Conversion

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Conversion of joules to calories (J to cal) and vice versa is an easy one since both units are units of energy. However, there is also a danger of confusion since the term "calorie" has two different definitions.

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How Many Feet Are In A Meter: Meters to Feet

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This conversion is very easy since the foot features a standardized value given in meters (m).

Meters Per Second to Feet Per Second: ft/s to m/s and m/s to ft/s Conversion

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How Many Meters Are In A Kilometer: m to km and km to m Conversion

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How to Convert km/h to m/s and m/s to km/h

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Convert Knots to Meters Per Second - knots to m/s and m/s to knots

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Conversion of knots to meters per second (knots to m/s) and meters per second to knots (m/s to knots) is an easy one since both units are used for measuring speed.

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Miles Per Hour to Meters Per Second (mph to m/s) and Meters Per Second to Miles Per Hour (m/s to mph) Conversion

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Conversion of miles per hour to meters per second (mph to m/s) and meters per second to miles per hour (m/s to mph) is an easy one since both units are used for measuring speed. And while the meter is a unit of the SI system of units, obviously the mile is not a unit of the SI system of units, but it is still used very often (obviously).

How Many Centimeters Are In A Meter - cm to m and m to cm Conversion

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How Many Gallons Are in a Barrel of Oil?

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Millivolts to Volts and Volts to Millivolts: How Many Millivolts Are In A Volt?

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Milliamps to Amps and Amps to Milliamps: How Many Milliamps Are In An Amp?

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How Many Grams Are in a Stone?

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Milliwatts to Watts and Watts to Milliwatts: How Many Milliwatts Are In A Watt?

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How Many Millimeters Are In A Meter?

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In order to convert millimeters to meters and meters to millimeters, feel free to use our conversion chart, conversion calculator, but also, learn the relationship between these units.

Just be aware that the "milli (m)" is one of the official unit prefixes in the International System (SI) of Units and means one-thousandth (1/1000 = 1/10³ = 10^-3) - so one millimeter is one-thousandth of one meter.

How Many Milligrams Are In A Gram?

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Just be aware that the "milli (m)" is one of the official unit prefixes in the International System (SI) of Units and means one-thousandth (1/1000 = 1/10³ = 10^-3).

How Many Milliliters Are In A Liter?

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The "milli" unit prefix is one of the official unit prefixes in the International System (SI) of Units and means one-thousandth (1/1000 = 1/10³ = 10^-3) and is often represented by a small letter "m".

How Many Grams Are In A Kilogram?

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Acres To Square Feet: How Many Square Feet Are In An Acre?

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How Many Gallons Are in a Cubic Foot?

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Ounces and Pounds vs. Troy Ounces and Troy Pounds

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Feel free to convert standard ounces and pounds to troy ounces and pounds and vice versa using our conversion chart, conversion calculator, and learn the relationship between these two units.

Conversion of standard ounces and pounds to troy ounces and pounds and back is an easy one because all these are units of mass, with fix ratio between these them.

How Many Grams Are in a Troy Ounce?

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Feel free to convert grams to troy ounces and troy ounces to grams using our conversion chart, conversion calculator, and learn the relationship between these two units.

Conversion of grams to troy ounces and troy ounces to grams is an easy one because both grams and troy ounces are units of mass, with fix ratio between these two units.

How Many Grams Are in an Ounce?

grams to ounces w200px Feel free to convert grams to ounces and ounces to grams using our conversion chart, conversion calculator, and learn the relationship between these two units.

Conversion of grams to ounces and ounces to grams is an easy one because both grams and ounces are units of mass, with fix ratio between these two units.

How Many Kilograms (kg) Are in a Stone (st)?

kilograms to stone w200px Feel free to convert kilograms (kg) to stones (st) and stones (st) to kilograms (kg) using our conversion chart, conversion calculator, and learn the relationship between these two units.

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How Many Ounces

Most Popular Weight Units

Most Popular Volume Units

International System (SI) of Units Official Prefixes

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