3.785 equals one gallon if you need to figure more gallons then just multiply it by the 3.875.

The exact conversion is 3.785411784 liters per gallon.

A liter is 1000 cm

A liter is 1000 cm

^{3}(exactly), there are 2.54 cm/inch (exactly), and there are 231 in^{3}in a US liquid gallon (exactly). So the exact conversion is 231(2.54)^{3}/1000 liters/gallon.500litres into gallons

1 US gallons = 3.7854118 liters. You can also get authentication of this information from the Internet and can get online measurement converter also.