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Convert Gallons To Ounces

Please enter a value below to convert gallons to ounces:

In order to do a reverse conversion from ounces to gallons clear values in the above fields and input the value in the “ounces” field or go to ounces to gallons converter page.

Facts about Gallon

Basic Facts: The gallon is a unit of volume in the United States’ customary units and imperial units. 3 distinct versions are in current use:

– The imperial gallon [imp gal], defined as 4.54609 litres, which is or was used in Australia, Canada, the United Kingdom, Ireland, and some Caribbean countries;

– The US gallon [US gal] is defined as 231 cubic inches [exactly 3.785411784 L], which is used in the US and some Latin American and Caribbean countries;

– The US dry gallon “usdrygal” is defined as 1/8 US bushel [exactly 4.40488377086 L].

There are four quarts in a gallon and eight pints in a gallon, which have dissimilar volumes in different systems. For both US [liquid] and an imperial gallon, the IEEE standard symbol is gal.

History: The term most immediately comes from galun, in Old Northern French – galon, but the usage was common in several languages, for instance, “gęllet” [means bowl] in Old English and “jale” in Old French.

The gallon was formed as the base of systems for measuring wine and beer in England. The sizes of gallons used in these two systems differed from each other: 1) One was based on the wine gallon [equal in size to the US gallon], 2) The other one is either the ale gallon or the larger imperial gallon.

By the end of the 18th century, there were three definitions of the gallon in common use:

1. The corn gallon, or Winchester gallon, of about 268.8 cubic inches (≈ 4.405 L) – The corn or dry gallon is used [along with the dry quart and pint] in the US for grain and different dry commodities.

2. The wine gallon, or Queen Anne’s gallon, which was 231 cubic inches [49] (≈ 3.785 L) – The wine, fluid, or liquid gallon has been the standard US gallon since the early 19th century.

3. The ale gallon of 282 cubic inches (≈ 4.622 L). – Britain adopted a close approximation, in 1824, to the ale gallon known as the imperial gallon and abolished all other gallons in favor of it.

Use: Gallons are often utilized for larger containers In the United States (US),  such as one-gallon cartons of milk or half-gallon tubs of ice cream. In the US, as well as some of its territories gallons are also widely used in fuel economy expression. The US gallon is utilized more frequently than the imperial gallon. Most countries around the world use liters when referencing fuel.

Facts about Fluid Ounce

Basic facts: A fluid ounce [symbol: fl oz] is a unit of volume in the United States customary and imperial systems of measurement. The United States fluid ounce is 1/16 of a US fluid pint, 1/128 of a US liquid gallon, which is equivalent to 29.57 mL. The imperial fluid ounce is 1/20 of an imperial pint, and 1/160 of an imperial gallon, which is equivalent to 28.4 mL.

History: The fluid ounce was initially based on the volume occupied by one ounce [weight] of a given liquid like water or wine, accordingly varying based on the system being used. In 1824, the imperial gallon was represented as the volume of ten pounds of water at a temperature of 16.7°C. The definition of the imperial gallon was later changed to be equivalent to 4.54609 liters, which made the imperial fluid ounce equivalent to exactly 28.4130625 mL.

Initially, the United States fluid ounce was based on the wine gallon used in England before 1824. In 1959 after the adoption of the international inch, the U.S. fluid ounce became equivalent to exactly 29.5735295625 mL.

Use: As the name shows, the fluid ounce is generally used as a measurement of liquid volume. As one of the many measurements of volume, it is mainly used in the United States and the United Kingdom.

How many ounces in a gallon

1 gallon is equivalent to 128 ounces. Use 128 as the factor to convert gallons to ounces. Below find some popular gallons to ounces conversion questions:

  • How many ounces in 1 gallons?  1 gallons x 128 = x number ounces
  • How many ounces in 2 gallons?  2 gallons x 128 = x number ounces
  • How many ounces in 3 gallons?  3 gallons x 128 = x number ounces
  • How many ounces in 4 gallons?  4 gallons x 128 = x number ounces
  • How many ounces in 5 gallons?  5 gallons x 128 = x number ounces
  • How many ounces in 6 gallons?  6 gallons x 128 = x number ounces
  • How many ounces in 7 gallons?  7 gallons x 128 = x number ounces
  • How many ounces in 8 gallons?  8 gallons x 128 = x number ounces
  • How many ounces in 9 gallons?  9 gallons x 128 = x number ounces
  • How many ounces in 10 gallons? 10 gallons x 128 = x number ounces
  • How many ounces in 15 gallons?  15 gallons x 128 = x number ounces
  • How many ounces in 55 gallons? 55 gallons x 128 = x number ounces

Gallons to Ounces Conversion Chart

GallonsOuncesGallonsOuncesGallonsOuncesGallonsOunces
1128263328516528769728
2256273456526656779856
3384283584536784789984
45122937125469127910112
56403038405570408010240
67683139685671688110368
78963240965772968210496
810243342245874248310624
911523443525975528410752
1012803544806076808510880
1114083646086178088611008
1215363747366279368711136
1316643848646380648811264
1417923949926481928911392
1519204051206583209011520
1620484152486684489111648
1721764253766785769211776
1823044355046887049311904
1924324456326988329412032
2025604557607089609512160
2126884658887190889612288
2228164760167292169712416
2329444861447393449812544
2430724962727494729912672
25320050640075960010012800

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