EV Efficiency Converter

EV Efficiency Converter (MPGe)

Convert between different EV energy consumption units.

Input

Standard US efficiency metric.

What is MPGe?

MPGe (Miles Per Gallon equivalent) represents the distance an EV can travel using the same amount of energy as contained in one gallon of gasoline (33.7 kWh).

The Confusion of Units

Gas cars had one number: MPG. EVs have three: MPGe, Wh/mi, and kWh/100km. Here is how to read them.

The Benchmark: 3.0 mi/kWh

If your car gets 3.0 mi/kWh (333 Wh/mi), that is "Average." Anything above 4.0 is highly efficient. Anything below 2.5 is a "guzzler" (often large electric trucks).

Why Wh/mi matters

Tesla uses Watt-hours per mile (Wh/mi). Lower is better.
250 Wh/mi is great efficiency.
350 Wh/mi is average.
500 Wh/mi is heavy towing/trucks.

Math for Nerds

One gallon of gasoline contains exactly 33.7 kilowatt-hours of potential energy.
So: 100 MPGe = 2.96 miles per kWh.