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EV Charging Cost Calculator

Find out exactly what it costs to charge your electric vehicle, per session, per month, and per year, at home or at a public charging station. Compare rates and see your cost per mile.

Calculate your EV charging cost

Enter your vehicle's battery size, your electricity rate, and how much you drive to get a full cost breakdown.

Charging inputs

Check your owner's manual or manufacturer specs. Common sizes: Tesla Model 3 LR = 82 kWh, Chevy Bolt = 65 kWh, Nissan Leaf = 40 kWh, F-150 Lightning = 98–131 kWh.
Your typical starting state of charge before plugging in.
Most manufacturers recommend not charging above 80–90% daily to protect battery health.
US average is ~$0.16/kWh. Check your utility bill for your actual rate, it varies widely by state and time-of-use plan.
DC fast chargers (Tesla Supercharger, Electrify America) average $0.28–$0.50/kWh. Level 2 public chargers vary.
Find in your car's settings or EPA label. Common values: Tesla Model 3 ~4.0, Chevy Bolt ~3.5, F-150 Lightning ~2.3.
Most EV owners do 80–90% of charging at home overnight.
Live results update as you type
Charging Cost Result

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Adjust inputs above and hit Calculate.

- Per full session
- Per month
- Cost per mile

How to use this calculator

Enter your EV's battery capacity (in kWh, found on the manufacturer's website or your EPA window sticker), your typical charge window (from % to %), your home and public electricity rates, annual mileage, and vehicle efficiency. The calculator shows the cost per charging session, monthly cost, annual cost, and your blended cost per mile, factoring in your mix of home vs. public charging.

Tips for success

  • Charging at home overnight on a Level 2 (240V) charger is almost always cheaper than public DC fast charging, often 50–70% less per kWh.
  • If your utility offers time-of-use (TOU) rates, charging between 10 PM and 6 AM can cut your home charging cost by 30–50%. Check with your utility for EV-specific rate plans.
  • Avoid regularly charging to 100%, most manufacturers recommend a daily limit of 80–90% to maximize long-term battery health. Reserve 100% charges for long trips only.
  • DC fast charging (Level 3) is expensive and degrades batteries faster than regular Level 2 charging when used frequently. Use it for road trips, not daily charging.
  • Many EV owners with solar panels charge for free or near-free, factor in your solar production if applicable.
Charging efficiency losses (typically 10–15%) mean you pay for slightly more energy than the battery actually stores. This calculator uses a 10% charging loss factor applied to the energy delivered. Real-world costs vary by ambient temperature, charger type, and battery age, treat results as close estimates, not exact figures.

Home vs. public charging comparison

  • Level 1 (120V outlet): ~1.4 kW · adds 3–5 miles/hour · no equipment cost · very slow
  • Level 2 (240V, home): 7–11 kW · adds 20–30 miles/hour · $500–1,500 installed · best for daily use
  • Level 2 (public): 7–19 kW · often free or $0.10–0.25/kWh · slower than DC fast charging
  • DC Fast Charging (Level 3): 50–350 kW · adds 100–200+ miles in 20–40 min · $0.28–0.60/kWh

FAQ

How much does it actually cost to charge an EV vs. filling a gas tank?

At $0.16/kWh and 3.5 miles/kWh, EV fuel cost is about $0.046/mile. At $3.50/gallon and 30 MPG, a gas car costs $0.117/mile, more than 2.5× higher. For 12,000 miles/year, that's roughly $550 for the EV vs. $1,400 for the gas car in fuel alone. Higher-efficiency EVs and lower electricity rates make the gap even larger.

What electricity rate should I use?

Check your most recent utility bill, it will show your rate in cents or dollars per kWh. The US average is roughly $0.16/kWh, but rates range from ~$0.10 (Louisiana, Oklahoma) to $0.30+ (California, Hawaii). If your utility offers an EV-specific time-of-use plan, you may be able to charge for as little as $0.05–0.09/kWh during off-peak hours.

Does cold weather affect EV charging costs?

Yes, batteries are less efficient in cold weather, so you'll use more energy per mile and your effective range drops. Charging in very cold temps also takes longer. Factor in a 10–30% efficiency reduction for winter months in cold climates when budgeting annually.

Is it worth installing a Level 2 home charger?

For most EV owners who charge primarily at home, yes, a Level 2 charger ($500–1,500 installed) pays for itself quickly through convenience and avoiding public charging fees. The federal Alternative Fuel Vehicle Refueling Property Credit (30C) covered 30% of installation costs through 2032 as of recent tax law, consult a tax professional to confirm current eligibility.

How do I find my car's efficiency rating?

The EPA posts official efficiency ratings at fueleconomy.gov for all EV models sold in the US. Ratings are expressed as MPGe (miles per gallon equivalent) and kWh per 100 miles. To convert kWh/100 mi to miles/kWh: divide 100 by the kWh/100 mi figure (e.g., 25 kWh/100 mi = 4.0 miles/kWh).