Calculate EV miles per kWh from a trip, plan energy and charging cost, or estimate usable-battery range with MPGe, grid loss, and efficiency scenarios.

Use battery energy and battery-based efficiency. Wall-energy ratings already include charging losses.

Range and charging estimates

Use available battery capacity, not nominal pack energy. Optional in trip-efficiency mode; blank omits range.

100% by default. Use 60% for an 80% to 20% window.

Blank assumes 0% loss. Enter the share of purchased wall energy not stored in the battery.

Blank omits costs. Energy-charge estimate only; excludes session, time and other fees.

Miles Per kWh Formula

The following formula is used to calculate the miles per kWh.

MPkWh = Miles Driven / Energy Consumed (kWh)

Variables:

  • MPkWh is the miles per kWh efficiency
  • Miles Driven is the total distance driven in miles
  • Energy Consumed is battery energy used to drive the distance in kilowatt-hours (kWh); this calculator applies charging losses separately

To calculate miles per kWh, divide the miles driven by the energy consumed in kWh.

What is Miles Per kWh?

Miles per kWh is a measure of the efficiency of an electric vehicle (EV). It indicates how many miles the vehicle can travel on one kilowatt-hour of electricity. This metric is similar to miles per gallon in gasoline vehicles but specific to the energy consumption of electric vehicles. It helps to understand the cost-effectiveness and environmental impact of driving an EV.

How to Calculate Miles Per kWh?

The following steps outline how to calculate the Miles Per kWh.

  1. First, determine the total distance driven in miles.
  2. Next, determine the battery energy consumed during the drive in kilowatt-hours (kWh). Do not use wall energy with an additional charging-loss adjustment.
  3. Use the formula MPkWh = Miles Driven / Energy Consumed (kWh).
  4. Finally, calculate the Miles Per kWh (MPkWh).
  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.

Miles Driven = 120 miles

Energy Consumed (kWh) = 24 kWh