30 MPG to Litres – Answer with Formula

The conversion of 30 mpg equals approximately 11.76 litres per 100 km.

This conversion takes the miles per gallon (mpg) value and transforms it into litres per 100 km by using the conversion factors for miles to kilometers and gallons to litres. Specifically, 1 mpg equals about 0.4251 litres per 100 km, so multiplying 30 mpg by this factor gives the result.

Conversion Result and Explanation

30 mpg converts to about 11.76 litres per 100 km. To find this, we multiply 30 by 0.4251. This means a vehicle that gets 30 miles per gallon consumes roughly 11.76 litres of fuel for every 100 km traveled, showing fuel efficiency in metric units.

Conversion Tool

Enter value in mpg:

Result in litres:

Conversion Formula

The formula to convert mpg to litres per 100 km is: Litres per 100 km = 100 / (mpg * 2.35215). This works because 1 mile equals 1.60934 km, and 1 gallon equals 3.78541 litres. Multiplying mpg by 2.35215 converts miles per gallon into litres per 100 km. For example, for 30 mpg: 100 / (30 * 2.35215) = 11.76.

Conversion Example

• Convert 20 mpg:
  • Multiply 20 by 0.4251, resulting in 8.502 litres per 100 km.
  • This shows a vehicle that gets 20 mpg consumes about 8.50 litres for every 100 km.
• Convert 50 mpg:
  • Multiply 50 by 0.4251, resulting in 21.255 litres per 100 km.
  • This indicates a less fuel-efficient vehicle consuming roughly 21.26 litres per 100 km.
• Convert 10 mpg:
  • Multiply 10 by 0.4251, resulting in 4.251 litres per 100 km.
  • This shows a very inefficient vehicle using about 4.25 litres per 100 km.
• Convert 45 mpg:
  • Multiply 45 by 0.4251, resulting in 19.1295 litres per 100 km.
  • This implies a vehicle consumes approximately 19.13 litres per 100 km.

Conversion Chart

mpg	Litres per 100 km
5.0	20.22
10.0	8.50
15.0	6.01
20.0	4.25
25.0	3.40
30.0	3.18
35.0	3.06
40.0	2.66
45.0	2.37
50.0	2.13
55.0	1.94

This chart helps you quickly find the litres per 100 km for various mpg values, useful for comparing fuel efficiencies. Simply locate your mpg in the first column and see the corresponding litres in the second.

Related Conversion Questions

• How many litres per 100 km are equivalent to 30 mpg?
• What is the fuel consumption in litres per 100 km for a car with 30 mpg efficiency?
• How do I convert 30 miles per gallon to litres per 100 km?
• What is the litre per 100 km equivalent of 30 mpg?
• Can you tell me how to calculate litres from 30 mpg?
• What is the metric fuel consumption for a vehicle with 30 mpg?
• How does 30 mpg compare to litres per 100 km?

Conversion Definitions

“mpg” (miles per gallon) measures how many miles a vehicle travels on one gallon of fuel, indicating fuel efficiency in imperial units. “litres” is a metric unit of volume used to quantify fuel, with one litre equal to 1,000 cubic centimeters, commonly used internationally for fuel measurements.

Conversion FAQs

How accurate is the 0.4251 factor for converting mpg to litres per 100 km?

This factor is based on precise conversion constants: 1 mile equals 1.60934 km, and 1 gallon equals 3.78541 litres. So multiplying mpg by 0.4251 provides a good estimate, though small rounding differences may occur depending on the calculation method used.

Can I convert any mpg value to litres per 100 km using this method?

Yes, the same formula applies for any mpg value. Simply multiply your mpg number by 0.4251 to get the approximate litres per 100 km. Keep in mind that the result is an estimate, and actual fuel consumption can vary based on vehicle specifics and driving conditions.

Why is the conversion from mpg to litres per 100 km important?

This conversion helps drivers and engineers compare fuel efficiency across different measurement systems, especially when switching between imperial and metric units. It allows for better understanding of a vehicle’s fuel consumption in international contexts and for environmental assessments.