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Gallon This unit of volume is defined in the British and American system of units. The US gallon is also know as the Winchester gallon. - Note: 1 UK gallon = 1.2 US gallons.
- Old Definition
- The Imperial (UK) gallon contains 277.274 in3 of distilled water at the temperature of 62°F, with a barometer standing at 30 inches, and weighs 10lbs of distilled water.
| Conversions | | | | | | | | 1 gallon (UK) | = | 4.54609 litres | | 1 gallon (US) | = | 3.785411784 litres | | 1 gallon (UK) | = | 1.2 gallon (US) | | 1 gallon (UK) | = | 8 pints | | 1 gallon (US) | = | 231 cu in | | | | |
See also: Fuel Consumption, Volume.
  
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