EV Charging Cost Calculator
Enter your EV's battery capacity, electricity rate, and efficiency (miles per kWh) to calculate the cost of a full charge and your cost per mile driven.
How the EV Charging Cost formula works
Charging cost and cost per mile:
Cost per full charge = Battery capacity (kWh) × Electricity rate ($/kWh) Cost per mile = Electricity rate / Efficiency (mi/kWh)
Step-by-step calculation
- Multiply your battery's kWh capacity by your electricity rate to find the cost of a full charge.
- Divide your electricity rate by your vehicle's efficiency (miles per kWh) to find cost per mile.
Worked example
A 75 kWh battery, $0.15/kWh electricity, at 3.5 mi/kWh efficiency: Cost per full charge = 75 × 0.15 = $11.25. Cost per mile = 0.15/3.5 ≈ $0.043/mile.
Frequently asked questions
Does this account for charging losses?
No — this is a simplified estimate based on battery capacity and electricity rate alone. Real-world charging involves some energy loss (commonly 10-15%), especially with fast charging, so actual cost per full charge can run somewhat higher than this estimate.
How does EV cost per mile compare to a gas car?
It varies by local electricity and gas prices, but EVs commonly cost noticeably less per mile to 'fuel' than comparable gas vehicles in many regions — comparing this calculator's result against the Gas Mileage Calculator's cost per mile gives a direct comparison using your own local rates.