EV Charging Cost Calculator
Calculate your daily, monthly, and annual EV charging costs. See how home charging compares to public DC fast charging, and what you save versus gasoline.
Charging Type Split (must total 100%)
120V standard outlet, ~4-5 mi/hr
240V charger, ~20-30 mi/hr
Public network, ~100-200 mi/hr
Disclaimer
This planning estimate uses the energy rates and charging mix you enter. It does not add charging losses, idle or session fees, subscriptions, parking charges, charger installation, taxes, or demand charges. Check your utility bill and charging-network price before making a cost decision.
| Access pattern | Entered rates | Monthly EV energy | When it is less favorable |
|---|---|---|---|
| Home charging available | 100% home at $0.16/kWh | $41.14 | High residential rates or low annual mileage reduce the advantage. |
| Mixed access | 50% home at $0.16 + 50% DC at $0.45/kWh | $78.43 | Membership fees, session fees, and charging losses can raise actual cost. |
| No home charging | 100% DC at $0.45/kWh | $115.71 | At this input, energy alone costs more than a 30 MPG car at $3.50/gal ($105/month). |
Formula: 30 miles ÷ 3.5 mi/kWh × 30 days × blended entered rate. The calculator does not add charging losses, idle/session fees, subscriptions, or parking charges.
Daily kWh Needed
Daily kWh = Daily Miles ÷ Efficiency (mi/kWh)
Home Charging Cost (L1 & L2)
Home Cost = Daily kWh × Home % × Home Rate ($/kWh)
L1 and L2 both use your home electricity rate — the difference is speed, not cost per kWh.
DC Fast Charging Cost
DC Cost = Daily kWh × DC% × DC Rate ($/kWh)
Total Monthly Cost
Monthly = (Home Cost + DC Cost) × 30
Cost per Full Charge
Per Charge = Battery kWh × Blended Rate
Blended Rate = (L1% + L2%) × Home Rate + DC% × DC Rate
Gas Equivalent
Monthly Gas Cost = (Daily Miles × 30 ÷ MPG) × Gas Price
Understanding EV Charging Costs: A Complete Guide
One of the most significant financial advantages of owning an electric vehicle can be a lower energy cost per mile. The result depends on electricity price, public-charging fees, efficiency, gasoline price, and MPG. Not all EV charging is equal—the cost varies considerably depending on whether you charge at home on Level 1 or Level 2, or use public DC fast charging networks. Understanding your charging mix is essential to accurately estimating your monthly EV charging expenses.
Home Charging Cost Inputs
Drivers with home access can charge at Level 1 (a standard 120V outlet) or Level 2 (a 240V dedicated circuit with a home EVSE). This model applies your entered residential electricity rate. At an entered rate of 18 cents per kWh, filling a 75 kWh battery from empty costs just $13.50. Compare this to filling a gas tank with 12 gallons at $3.93 per gallon ($47), and the savings are substantial.
Public DC Fast Charging: Convenient but Pricier
DC fast charging offers the convenience of rapid charging on the road, adding 100 to 200 miles in 20 to 40 minutes. However, public DCFC prices vary by network, site, time, membership, and fees. Frequent reliance on public fast charging can significantly increase your monthly charging costs. Most financial planners recommend using DCFC primarily for road trips and occasional convenience situations, relying on home charging for daily needs.
Optimizing Your Charging Costs
When home charging is available, an eligible off-peak tariff may reduce energy cost, though equipment and fixed charges can offset part of the difference. Many utilities offer time-of-use (TOU) rate plans that discount electricity rates during off-peak hours — typically during utility-defined off-peak periods. PG&E, for example, publishes current EV rate-plan prices and time windows on its official rate page. Compare the complete tariff—including seasonal rates and fixed charges—with your current plan before switching.
Frequently Asked Questions
How much does it cost to fully charge an EV at home?
The cost to fully charge an EV at home depends on battery size and your all-in electricity rate. At an entered 18¢/kWh, 75 kWh costs $13.50 before charging losses; 40 kWh costs $7.20 and 100 kWh costs $18.00. Real sessions rarely start at empty and billed energy can exceed battery energy because this calculator does not add charging losses.
What's the difference between Level 1, Level 2, and DC fast charging costs?
Level 1 and Level 2 home charging use the entered home electricity rate; their main difference is charging speed and installation needs. DC fast charging uses the separate public rate you enter. Actual public prices, speeds, session fees, and idle fees vary by network, site, vehicle, and time.
How much does charging an EV cost per mile?
EV charging cost per mile depends on your vehicle's efficiency and local electricity rate. At 18 cents per kWh and 3.5 miles per kWh efficiency, home charging costs about 5.1 cents per mile. At DC fast charging rates of 40 cents per kWh, the cost rises to about 11.4 cents per mile. By comparison, a 30 MPG gas car at $3.93 per gallon costs about 13.1 cents per mile — so home EV charging is much cheaper, and even DC fast charging is modestly cheaper than gas.
Is it cheaper to charge an EV at home or at a public station?
Home charging is cheaper when your all-in home rate is below the public station's all-in price, but the answer depends on the tariff, network, membership, session and parking fees. Drivers without home charging can set the DC share to 100% and enter the posted public price for a relevant comparison.
How do I calculate my monthly EV charging cost?
Monthly EV charging cost = (Daily Miles ÷ Efficiency) × 30 days × Blended Charging Rate. For example, 40 miles per day ÷ 3.5 mi/kWh = 11.43 kWh per day. If 80% is home charging at $0.18/kWh and 20% is DC fast charging at $0.40/kWh, the blended rate is $0.224/kWh and the exact monthly result is $76.80.
What states have the cheapest electricity for EV charging?
The state selector uses a dated residential-rate snapshot (February 2026) and auto-fills the exact stored value—for example, California is 31.9¢/kWh and New York is 22.8¢/kWh. These are planning averages, not a ranking or a utility tariff. Enter the rate from your own bill for a current comparison.
How does EV charging cost compare to gasoline?
At the example inputs of 18¢/kWh and 3.5 mi/kWh, home charging costs about 5.1¢/mile; a 30 MPG car at $3.93/gallon costs 13.1¢/mile. That is an input-driven example, not a universal result. Enter your utility's all-in rate, the public rate you use, your vehicle efficiency, local gasoline price, and comparison MPG.
Data Sources
The calculator uses user-entered delivered kWh and does not add charging losses, demand charges, idle/session fees, subscriptions, or parking charges. DC and gasoline defaults are editable scenario inputs, not verified national averages.