Updated June 29, 2026
EV Charging Cost Calculator
Estimate the cost of charging an electric car at home from charger power, charging time, and your electricity rate.
Live calculator
Calculate your actual running cost
Running this ev charger for 3 hours a day, 3 days a week uses about 280.8 kWh each month.
Quick answer
How much does an ev charger cost to run?
A 7,200 W EV charger used for 3 hours a day, 3 days a week, consumes about 280.8 kWh per month. At $0.30 per kWh, that is approximately $84.24 per month. Replace these example figures with the wattage and electricity rate from your appliance and bill.
What changes the real running cost?
Home EV charging cost depends on charger power, charging duration, tariff, charging losses, and how many miles you need to replace each week.
A 7.2 kW home charger is 7,200 watts. For battery-size estimates, use required kWh rather than the car's full battery capacity if you rarely charge from empty.
Assumptions used in this example
This page starts with 7,200 watts, 3 hours of use per day, and 3 days per week. Those defaults are only a practical starting point. Replace them with the number on your product label, energy label, smart plug, or electricity bill.
Example EV charger costs
These examples use 7,200 W for 3 hours a day and 3 days per week.
| Electricity rate | Per hour | Per month | Per year |
|---|---|---|---|
| $0.15 / kWh | $1.08 | $42.12 | $505.44 |
| $0.25 / kWh | $1.80 | $70.20 | $842.40 |
| $0.35 / kWh | $2.52 | $98.28 | $1179.36 |
Ways to reduce the cost
Start with changes that reduce active runtime without compromising safety or the job the appliance needs to do.
- Use off-peak tariffs when available.
- Schedule charging instead of topping up at peak times.
- Compare home cost with public charging before long trips.
Estimate only. Actual consumption varies by model, setting, condition, temperature, duty cycle, and tariff. Use a plug-in meter or energy-label figure when accuracy matters.
FAQ
EV charger running cost questions
How do I calculate EV charger running cost?
Divide the watts by 1,000 to get kilowatts, multiply by the hours used, then multiply by your electricity price per kWh. This page pre-fills 7,200 W, 3 hours per day, and 3 days per week as a starting example.
How much does an EV charger cost per hour?
At 7,200 W and $0.30 per kWh, the example cost is about $2.16 per hour while it is actively using that power. Change the rate field to match your own bill.
Why might my real EV charger cost be different?
A 7.2 kW home charger is 7,200 watts. For battery-size estimates, use required kWh rather than the car's full battery capacity if you rarely charge from empty.
Should I use rated watts or measured watts?
Rated watts are useful for a quick estimate, but measured wall power or an energy-label kWh figure is usually more accurate because many appliances cycle on and off or change power during use.
Does the calculator include standing charges, taxes, or demand charges?
No. The calculator estimates usage cost from kWh only. If your bill includes standing charges, taxes, delivery fees, or demand charges, add those separately.
Can I share my result?
Yes. Use the share or copy button after entering your wattage, hours, days, rate, and currency. The page stores those inputs in the URL so you can revisit the same estimate.