EV Charging Cost Calculator

Calculate your electric vehicle charging costs, compare to gasoline, and see annual savings.

Your Electric Vehicle

EV Range (miles)

Battery Size (kWh)

Home Electricity Rate ($/kWh)

Public Charging Rate ($/kWh)

Miles Driven per Year

% Charged at Home

Charging Level

Gas Vehicle Comparison

Equivalent Gas Car MPG

Gas Price ($/gallon)

Charging Costs

—
Cost / Full Charge (Home)

—

Cost per 100 Miles

—

Annual EV Cost (blended)

—

Annual Gas Car Cost

—

Annual Savings (EV)

—

Charge Time (0–100%)

Home vs. Public Charging Breakdown

Scenario	Rate	Annual kWh	Annual Cost	vs Gas Car

Understanding EV Charging Efficiency

Not all electricity from the wall reaches your battery. Level 2 charging is about 88–92% efficient; Level 1 is similar. DC fast charging can be 85–92% efficient. This means if your battery is 75 kWh, you'll actually draw about 80–82 kWh from the grid for a full charge. Factor this into cost estimates at public stations that charge by kWh dispensed.

Average US Electricity Rate

The US residential average is about $0.16/kWh, ranging from $0.10/kWh (Louisiana) to $0.30+/kWh (California, Hawaii). Time-of-use (TOU) rates can drop to $0.07–0.10/kWh overnight — ideal for EV owners. Many utilities offer EV-specific rate plans. Charging during off-peak hours (10pm–6am) is the single biggest way to reduce EV fuel costs.

DC Fast Charging vs. Home Charging Cost

Public DC fast charging typically costs $0.28–0.45/kWh, vs $0.12–0.18/kWh at home. Relying entirely on public fast charging eliminates the cost advantage of EVs over gasoline. The EV ownership model is optimized for those who can charge primarily at home overnight. Apartment dwellers without access to Level 2 charging face a significant cost disadvantage.