Gallon

A gallon is a unit of measurement used to measure volume. People have used many different gallons throughout history. There are three types of gallon still in use.

1 imperial gallon = 160 imperial fluid ounces (fl. oz.) ** No longer officially used in the United Kingdom. **
= 8 imperial pints
=
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Template:R from move19 of a firkin (of beer)

=
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Template:R from move18 of an imperial bushel

= 4.54609 litres (exactly)
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Template:R from move4 12 litres

≈ 1.20 U.S. wet gallons
≈ 1.03 U.S. dry gallons
= 10 pounds of pure water at room temperature
1 U.S. wet gallon = 231 cubic inches = 3 in × 7 in × 11 in ** This is the gallon mostly used in the US. **
= 128 U.S. fl. oz.
= 8 U.S. wet pints
=
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Template:R from move142 of a U.S. oil barrel

= 3.785411784 litres (exactly)
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Template:R from move3 34 litres

≈ 0.83 imperial gallons
≈ 0.86 U.S. dry gallons
≈ 8.33 pounds of pure water at room temperature
1 U.S. dry gallon = 268.8025 cubic inches ** Not typically used in the US. **
= 8 U.S. dry pints
=
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Template:R from move18 of a U.S. bushel

= 4.40488377086 litres (exactly)
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Template:R from move4 25 litres

≈ 0.97 imperial gallons
≈ 1.16 U.S. wet gallons