EV Charging Cost Calculator

Calculate electric vehicle charging costs.

How to Do It Manually

Calculate EV charging cost using battery capacity (kWh), charger efficiency, and local electricity rate ($/kWh).

Charging Cost = (battery kWh / charger efficiency) × electricity rate ($/kWh)
  1. Determine battery capacity in kWh (e.g., 75 kWh).
  2. Enter local electricity rate (e.g., $0.15 per kWh).
  3. Account for charger efficiency (typically 85–95%; use 0.9 for 90%).
  4. Calculate: (kWh / 0.9) × $0.15.

Frequently Asked Questions

How much does it cost to charge an EV?

Varies by location. US average: $0.10–0.20/kWh. A 75 kWh battery costs $8–20 to charge.

Is charging cheaper than gas?

Usually yes. EV charging is 1/4–1/3 the cost per mile of gasoline.