In the world there are different types of measuring system. On the other hand different quantities have different kinds of measurement like Imperial unit, US customary, SI unit and other local measurement unit.
To know about how many liters in a gallon clearly it will be better to know about liter and gallon. Moreover it should be kept in mind the measurement of dry quantity is different from the liquid form because weight and volume are different factors.
Liter and Gallon
Liter: The word liter has taken from the French base unit litron but the name comes from the Greek. It is a SI measurement system unit of volume. The liter is an American spelling and the litre is a British spelling. The symbol of liter is L or l. Moreover sometimes the lower case l writes in cursive form in order to eliminate the confusion with the number 1.
1 liter is equal to 0.001 cubic meter.
But from liter to gallon it will be as follow:
| Conversion | Liter | Gallon |
| Liter to US liquid gallon | 1 | 0.26417 US gal lqd |
| Liter to US dry gallon | 1 | 0.22702 US gal dry |
| Liter to British Imperial System | 1 | 0.21997 UK gal |
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Gallon:
The word gallon comes from the Roman word galeta means pailful. It is a unit measurement for liquid capacity and volume of a quantity. The measurement unit is used in both British imperial system and US customary unit. Moreover the symbol of gallon is gal. This unit of measurement system has different kinds of definition but currently there prevails three definition of gallon. The US has two definition of gallons and they are fluid gallon and dry gallon. On the other hand the UK uses only one definition of gallon. So the definition of gallon is as follow:
- US fluid gallon: 1 US fluid gallon is equal to 3.785 liters or 231 cubic inches
- US dry gallon: 1 US fluid gallon is equal to 4.405 liters or 268.8025 cubic inches
- Imperial gallon: 1 UK imperial gallon equals to 4.456 liters or 277.42 cubic inches
After knowing about the gallon and liter it will be easy to find out how many liters in a gallon. The US liquid gallon or imperial gallon is equal to four quarts again equals to two pints, moreover it makes two cups and further it makes two gills.
How many liters in a gallon of milk
In America a gallon of milk is equals to 3.785 liters or 128 fluid ounces.But in British a gallon of milk is equals to 4.546 liters or 160 fluid ounces. So in Imperial system weighs 20 percent more milk than American gallon system.
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How many liters in a gallon of petrol
The imperial gallon is a commercial fuel expression of Canada and UK. So 4.54609 litres is equal to 1 UK gal. Moreover the petrol is a liquid quantity and it is a volume unit. So in US liquid 3.785 liters of petrol makes 1 US gal lqd. The US dry gallon has not any use in the commercial purposes of petrol.
How many liters in a gallon of gas
The gas remains in the gaseous form. So it will be better to measure the gas in the volume unit in cubic inches because it includes height, length and wide in the gaseous. Moreover in the liquid state the measurement unit is gallon. The conversion of gas will be as follow:
- US fluid gallon:
1 US fluid gallon is equal to 231 cubic inches that makes 3.785 liters liquid gas
- US dry gallon:
1 US fluid gallon is equal to 268.8025 cubic inches that makes 4.405 liters of liquid gas
- Imperial gallon:
1 UK imperial gallon equals 277.42 cubic inches that makes 4.456 liters of liquid gas
How many liters in a gallon Canadian
Currently Canada uses SI unit for measuring the different quantities including liter for liquid. But before that the Imperial measurement system prevailed in Canada because the country has a strong tie with the United Kingdom. The imperial gallon system is used as the fuel economy expression not only in United Kingdom but also in Canada. Further the conversion chart of gallon to liquid will be same as Imperial System gallon.
| Gallon | Liter |
| 1 | 4.54609 |
| 2 | 9.09218 |
| 3 | 13.6383 |
| 4 | 18.1844 |
| 5 | 22.7304 |
| 6 | 27.2765 |
| 7 | 31.8226 |
| 8 | 36.3687 |
| 9 | 40.9148 |
| 10 | 45.4609 |
How many liters in a gallon United Kingdom (UK)
The UK uses Imperial system for measuring the liquid. But with the change of time the country uses liter as primary unit for measuring the liquid in commercial and trade purposes. On the other hand gallon is used as secondary unit or supplementary unit in UK. Moreover the UK gallon is used in some Commonwealth country too. In Imperial System 1 gallon is equal to 4.546 liters. The chart of liquid conversion from gallon to liter in British Imperial system is as follow:
| Gallon | Liter |
| 1 | 4.54609 |
| 2 | 9.09218 |
| 3 | 13.6383 |
| 4 | 18.1844 |
| 5 | 22.7304 |
| 6 | 27.2765 |
| 7 | 31.8226 |
| 8 | 36.3687 |
| 9 | 40.9148 |
| 10 | 45.4609 |
How many liters are in a gallon (US)
The measuring unit gallon has two different definitions in United States of America. They are as follow:
- US fluid gallon : It is used to measure the volume of the fluid.1 gallon is equal to 3.785Liters
- US dry gallon: The US had taken Winchester gallon from British Empire for measuring the dry quantities .But the US has not any commercial uses of dry gallon. Moreover measurements of US dry gallon has been changed to bushels.1 gallon is equal to 268.8025 cubic inches or 4.405 Liters or 1/8 bushels.
The chart of conversion from gallon fluid to liter is as follow:
| Gallon(US fluid) | Liter |
| 1 | 3.785 |
| 2 | 7.571 |
| 3 | 11.356 |
| 4 | 15.142 |
| 5 | 18.927 |
| 6 | 22.712 |
| 7 | 26.498 |
| 8 | 30.283 |
| 9 | 34.069 |
| 10 | 37.854 |
On the other hand conversion chart of dry gallon to liter is as follow:
| Gallon(US dry) | Liter |
| 1 | 4.405 |
| 2 | 8.810 |
| 3 | 13.215 |
| 4 | 17.620 |
| 5 | 22.024 |
| 6 | 26.429 |
| 7 | 30.834 |
| 8 | 35.239 |
| 9 | 39.644 |
| 10 | 44.049 |
Most of the countries of the world uses the liter for measuring the liquid for commercial and trade purposes. But it will be helpful to know about how many liters in a gallon because in many region gallon is also used as the measuring unit. Â Further by knowing conversion about how many liters in a gallon will remove the confusion too.
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