Fuel Economy Converter

How to calculate fuel economy?

Fuel efficiency is a measurement of the distance traveled per unit of fuel consumed, or conversely, the specific volume of fuel consumed to cover a set distance.

Formula for US MPG: L/100km = 235.215 / MPG

Using the Fuel Converter: an example

To illustrate how this works, let's convert 30 MPG (US) into metric units (L/100km).

Step-by-step calculation:

1. Identify the constant (235.215 for US)
2. Divide the constant by 30 MPG
3. Result: approximately 7.84 L/100km

This demonstrates that a car getting 30 miles per gallon is consuming roughly 7.8 liters for every 100 kilometers traveled.

Frequently Asked Questions

Why are there two types of MPG?

The US liquid gallon is smaller (approx. 3.785 liters) than the UK imperial gallon (approx. 4.546 liters), which leads to different conversion constants for each region.

What is the benefit of L/100km?

L/100km is more intuitive for calculating fuel costs for a specific trip distance. However, unlike MPG, a lower number signifies better efficiency.

How do I convert UK MPG to L/100km?

To convert UK Imperial MPG to L/100km, use the constant 282.481. The formula is: L/100km = 282.481 / MPG (UK).