Fuel Efficiency Range
Find how far your vehicle can travel on a tank of fuel.
About Fuel Efficiency Range
Range is the tank capacity multiplied by fuel efficiency, giving the theoretical maximum distance. Applying a safety reserve reflects the practical distance you can plan around before refueling. Knowing usable range prevents planning a leg you cannot complete, especially in remote areas where fuel stations are scarce.
Formula
Fuel Efficiency Range
Range = tank x mpg; usable = range x (1 - reserve%)
- reserve
- Fuel you avoid using to protect the pump
Worked example
With the default values below, Fuel Efficiency Range returns Full Tank Range of 480.0. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Tank capacityminimum 0 gal
- 16 gal
- Fuel efficiencyminimum 0.1 mpg
- 30 mpg
- Reserve keptaccepts 0–100 %
- 10 %
Results
- Full Tank Range
- 480.0 mi
- Usable Range
- 432.0 mi
- Fuel per Mile
- 0.0333 gal/mi
Step by step
- 1Values used
- 2Fuel Efficiency Range
- 3Full Tank Range= 480.0 mi
- 4Usable Range= 432.0 mi
- 5Fuel per Mile= 0.0333 gal/mi
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Fuel Efficiency Range calculated?
Range = tank x mpg; usable = range x (1 - reserve%) Range is the tank capacity multiplied by fuel efficiency, giving the theoretical maximum distance. Applying a safety reserve reflects the practical distance you can plan around before refueling.
Why does Fuel Efficiency Range matter?
Knowing usable range prevents planning a leg you cannot complete, especially in remote areas where fuel stations are scarce.
What values do I need to enter?
This calculator takes 3 inputs: Tank capacity, Fuel efficiency, Reserve kept. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.