# MPG Calculator

### What is MPG?

MPG (miles per gallon) is primarily used to determine the fuel efficiency of a car. It is the measurement of the number of miles a car can travel on one gallon of fuel. It is the prevalent measure of fuel economy in the UK. The real figure of mpg varies considerably depending on traffic, weather conditions, how smoothly or aggressively a car is being driven.

## Imperial Gallon

The imperial (UK) gallon, was originally based on the volume of 10 pounds (approximately 4.54 kg) of water at 62 °F (17 °C). It is now defined as exactly 4.54609 litres (about 277.42 cubic inches).

The imperial (UK) gallon = 4.54609 litres
1 imperial (UK) gallon ≈ 1.2 US liquid gallons.
The US gallon is 231 in³ ≈ 3.785 litres.
US gallon: 3.785 411 784 L, exactly

The imperial (UK) gallon, was originally based on the volume of 10 pounds (approximately 4.54 kg) of water at 62 °F (17 °C). It is now defined as exactly 4.54609 litres (about 277.42 cubic inches).

The imperial (UK) gallon = 4.54609 litres
1 imperial (UK) gallon ≈ 1.2 US liquid gallons.
The US gallon is 231 in³ ≈ 3.785 litres.
US gallon: 3.785 411 784 L, exactly