Transportation
A 7,200 watt EV charger costs about $2.59 to run for 2 hours at $0.18 per kWh.
Quick estimate
This uses 7200 watts, 2 hours per day, and an electricity rate of $0.18 per kWh.
EV charging cost is usually better estimated from kWh added to the battery, but charger watts can estimate session cost.
Many electric vehicle charger units fall around 7200 watts, with a rough range of 1400 to 11500 watts. Check the product label, user manual, or manufacturer specifications for the most accurate number.
| Estimate | Watts | Hours per day | Daily cost | Monthly cost |
|---|---|---|---|---|
| Low estimate | 1400W | 1 | $0.25 | $7.56 |
| Typical use | 7200W | 2 | $2.59 | $77.76 |
| High estimate | 11500W | 3 | $6.21 | $186.30 |
An EV charger's power depends on supply voltage, circuit limit, vehicle onboard charger, battery state, and charging schedule. Energy lost during conversion and battery conditioning means wall energy exceeds energy stored in the battery.
Wattage input
Use actual charging power reported by the car, charger, or utility meter. A charger's maximum rating is only a ceiling; the vehicle may accept less, especially near a full battery or in extreme temperatures.
Runtime input
Base runtime on miles driven and energy replaced, or use charging-session records. Do not assume the cable delivers full power for every connected hour because charging stops when the target is reached.
Convert watts to kilowatts, multiply by the number of hours used, then multiply by your electricity rate.
Cost = Watts / 1000 x Hours Used x Electricity RateFor this electric vehicle charger example: 7200 / 1000 x 2 x 0.18 = $2.59 per day.
These details make this estimate more useful for real-world use.
For electric vehicles, the most accurate everyday estimate is usually the number of kWh added to the battery multiplied by your electricity rate. Charger wattage and hours are still useful when planning a charging session.
Some utility plans charge much less overnight and more during peak hours. If you have time-of-use pricing, enter the rate that applies when you normally charge.
Charge during lower-rate periods if your utility offers time-of-use pricing.
The easiest way to improve the estimate is to replace the default values with your actual wattage, average runtime, and local electricity rate.
Wattage ranges are practical planning estimates for common household appliances. Actual use can differ by model, age, settings, room conditions, and maintenance.
These authoritative sources support the calculation method, default electricity-rate benchmark, and appliance-specific operating context. The wattage range remains a planning estimate; use the nameplate on your own appliance for the most accurate input.
Used to benchmark the rounded default residential electricity rate. Your utility bill remains the best source for your own rate.
Supports the watts-to-kWh calculation method and the recommendation to check the appliance nameplate or use a power meter.
Provides charging-level and home-charging power context for electric vehicles.
Charging has conversion losses and may also power battery heating, cooling, or vehicle electronics. For bill estimates, use energy measured at the wall rather than only the battery percentage gained.
A 7,200 watt EV charger costs about $2.59 to run for 2 hours at $0.18 per kWh.
Use the wattage printed on the appliance label when possible. As a starting estimate, this page uses 7200 watts and shows a common range of 1400 to 11500 watts.
Electricity bills include many appliances, fees, taxes, seasonal changes, and utility rate structures. This calculator estimates appliance energy cost only.
Keep comparing by category or jump to another common household appliance.
These calculators help compare other appliances that often show up on home electricity bills.
Use these guides to understand the formula, wattage, rates, and ways to lower appliance costs.