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Do you want to compare the charging cost of electric vehicles based on your own kWh electricity rate?

Higher Fuel cost improves the case for EVs

Average fuel cost for combustion vehicles has increased 37% from around $0.08 at the start of 2016 to around $0.11 in 2017 while average electricity rates in the USA only increased around 5%. In some states such as Hawaii where EV ownership was not economical rates have decreased from highs due to solar generation.

The best way to compare EVs amongst each other and with combustion vehicles is to calculate fuel cost. Use wattEV2buy’s charging cost calculator to determine the charge cost in your state or country. We utilize “usable” battery capacity, real-life millage as determined by the EPA, and charge efficiencies for a more accurate comparison across vehicles and compare the result relative to owning a combustion vehicle.

The calculator uses the latest electricity rates per state to calculate your EV charge cost or enter your own rate to see the benefits of time of use charging.

NOTE: Although we ensure that we use the correct available battery capacities and not averages such as most other calculators to get the most accurate calculation real-life cost and ranges might vary due to weather conditions and other factors such as battery decay.

EV manufacturers and dealerships don’t provide the cost per mile/km for you to make an informed comparison in your EV buying decision. WattEV2Buy allows you to calculate your EV charging cost based on your electricity cost .

charging cost

The United States Environmental Protection Agency issues a Monroney Sticker, otherwise known as a Window Sticker showing the fuel economy through a metric called the MPGe (Mile Per Gallon equivalent) which is based on the energy content comparable across various fuel types and vehicle technologies. The sticker also shows other estimated fuel costs, but it does not provide the per kWh charging cost which is a function of the battery, range, and your specific utility electricity rate.


We have designed some cool tools to compare electric vehicles. Our tools include a mobile app, charging cost calculator and EV selector. Use wattEV2Buy’s proprietary tools to find the ideal EV for your requirements and determine the cost of charging EVs.



Not sure which model EV to choose?

wattEV2Buy’s easy to use EV Select tool helps identify which electric vehicle is perfect for your specific requirements. EV Select compare electric vehicles battery electric range over various vehicle types. Within four clicks you can get the perfect luxury sedan able to drive your required distance on battery power.



Unsure what the charging cost will be?

wattEV2Buy’s easy to use Charging Cost Calculator compare electric vehicles charging cost in your state and relate it to equivalent gasoline cost. The charging cost calculator also allows you to be specific and customize your electricity cost in kWh and provide results in miles and kilometers, making it usable all over the world.


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