EV vs Gas Cost Calculator
Compare the cost per mile and yearly fuel bill of an electric car against a gas car.
Electric car
Gas car
Yearly savings with the EV
$924
The EV runs $576/yr in electricity versus $1,500/yr in gas.
EV — cost per mile
$0.048
Gas — cost per mile
$0.125
EV — annual fuel
$576
Gas — annual fuel
$1,500
How it works
The comparison comes down to two simple cost-per-mile figures. For the EV, multiply how much energy it uses per mile (kWh per mile) by your electricity price per kWh. For the gas car, divide the price of a gallon by the miles per gallon. Then multiply each by your yearly mileage.
Typical numbers: an efficient EV uses around 0.25–0.35 kWh per mile, home electricity runs roughly 12–20 cents per kWh, and a gas sedan gets maybe 25–35 mpg. Plug in your own rates — off-peak charging or expensive premium gas can swing the result a lot.
The tool shows cost per mile and annual fuel cost for each, then the yearly difference. It only counts fuel and electricity, not the purchase price, insurance, or maintenance, so treat it as the energy piece of a bigger ownership picture.
Frequently asked questions
How do I find my car's kWh per mile?
Most EVs report efficiency as miles per kWh or Wh per mile on the dash or in the app. If you see 3.3 miles per kWh, that's about 0.30 kWh per mile. Watt-hours per mile divided by 1,000 also gives kWh per mile.
Does public fast charging change the math?
A lot. Home charging is usually the cheapest electricity you'll find, while DC fast chargers can cost two to four times as much per kWh. If you rely on public charging, enter that higher rate to get a realistic comparison.
Is fuel cost the whole story?
No. EVs often win on fuel and routine maintenance but can cost more up front and carry different insurance and depreciation. This tool isolates the fuel savings so you can weigh them against those other factors yourself.