EV Range Efficiency
Measure an EV's energy use and the cost to charge it.
About EV Range Efficiency
Battery size divided by EPA-style range yields energy per mile, then converted to the metric figure and charged cost. Energy efficiency converts directly into charging cost, so it is the metric that proves whether an EV is cheap to run.
Formula
EV Range Efficiency
kWh/mi = battery / range; cost per mile = kWh/mi x price
- kWh/100km
- Common European EV consumption figure
Worked example
With the default values below, EV Range Efficiency returns Efficiency of 0.248. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Battery capacityminimum 0.1 kWh
- 62 kWh
- Rangeminimum 1 mi
- 250 mi
- Electricityminimum 0
- 0.15
Results
- Efficiency
- 0.248 kWh/mi
- Consumption
- 15.4 kWh/100km
- Cost per Mile
- 0.037 $/mi
- Full Charge Cost
- $9.30
Step by step
- 1Values used
- 2EV Range Efficiency
- 3Efficiency= 0.248 kWh/mi
- 4Consumption= 15.4 kWh/100km
- 5Cost per Mile= $0.037/mi
- 6Full Charge Cost= 9.30
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 or compounding frequency into account.
- Figures are rounded for display to 3 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 EV Range Efficiency calculated?
kWh/mi = battery / range; cost per mile = kWh/mi x price Battery size divided by EPA-style range yields energy per mile, then converted to the metric figure and charged cost.
Why does EV Range Efficiency matter?
Energy efficiency converts directly into charging cost, so it is the metric that proves whether an EV is cheap to run.
What values do I need to enter?
This calculator takes 3 inputs: Battery capacity, Range, Electricity. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.