Calculate gallons per mile, miles per gallon, trip fuel cost, fuel used, and CO2 emissions from distance, economy, and fuel type.

Gallons Per Mile Calculator

GPM↔MPG Converter
Trip Fuel & Cost
CO2 Emissions

Enter a value and unit; the rest will convert automatically on Calculate.

Related Calculators

Gallons Per Mile Formula

The following formula is used to calculate the gallons per mile. 

GPM = FC / DT

Variables:

  • GPM is the gallons per mile
  • FC is the fuel consumed (gallons)
  • DT is the distance traveled (miles)

To calculate gallons per mile, divide the total fuel consumed by the distance traveled.

What is Gallons Per Mile?

Gallons per mile (GPM) is a measure of fuel efficiency that indicates how many gallons of fuel a vehicle uses to travel one mile. It is an alternative to the more common miles per gallon (MPG) metric and can be particularly useful for comparing the fuel efficiency of vehicles that consume a lot of fuel, such as trucks or heavy machinery.

How to Calculate Gallons Per Mile?

The following steps outline how to calculate the Gallons Per Mile.

  1. First, determine the total fuel consumed (FC) in gallons.
  2. Next, determine the distance traveled (DT) in miles.
  3. Next, gather the formula from above = GPM = FC / DT.
  4. Finally, calculate the Gallons Per Mile (GPM).
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total fuel consumed (FC) = 15 gallons

distance traveled (DT) = 300 mile